Hackage :: [Package]

oeis2: Interface for Online Encyclopedia of Integer Sequences (OEIS).

[ bsd3, library, math ] [ Propose Tags ] [ Report a vulnerability ]

Please see the README on GitHub at https://github.com/23_prime/oeis2#readme

[Skip to Readme]

Downloads

Maintainer's Corner

Package maintainers

For package maintainers and hackage trustees

Candidates

  • No Candidates
Versions [RSS] 0.1.0, 1.0.0, 1.0.1, 1.0.2, 1.0.3, 1.0.4, 1.0.5, 1.0.6, 1.0.7, 1.0.8, 1.0.9
Change log ChangeLog.md
Dependencies aeson (>=1.3 && <1.5), base (>=4.7 && <5), containers (>=0.5 && <0.7), http-conduit (>=2.3 && <2.4), lens (>=4.16 && <4.18), lens-aeson (>=1.0 && <1.1), text (>=1.2 && <1.3), vector (>=0.12 && <0.13) [details]
License BSD-3-Clause
Copyright 2018 okkey
Author okkey
Maintainer a23b23c23d23e@gmail.com
Category Math
Home page https://github.com/23_prime/oeis2#readme
Bug tracker https://github.com/23_prime/oeis2/issues
Source repo head: git clone https://github.com/23_prime/oeis2
Uploaded by 23prime at 2018-12-03T18:54:00Z
Distributions Stackage:1.0.9
Downloads 3145 total (64 in the last 30 days)
Rating (no votes yet) [estimated by Bayesian average]
Your Rating
  • λ
  • λ
  • λ
Status Docs available [build log]
Last success reported on 2018-12-03 [all 1 reports]

Readme for oeis2-0.1.0

[back to package description]

oeis2

Haskell interface for Online Encyclopedia of Integer Sequences; homage to oeis.

Difference from oeis

  • Source data of OEIS.
    : oeis use fmt=text, but this library use fmt=json.
  • Possible to get all search results.
  • Search functions from ID or sub-sequence are merged.
  • Possibele to search from other than ID or sub-sequence.
  • Support for HTTPS.

Usage

Add import statement.

import Math.OEIS

  • Get all search results from sub-sequence

    • If n == 0, you get all search results.

      ghci>searchSeq (SubSeq [1,2,3,4]) 0
[OEIS {number = "A000027", ids = ["M0472","N0173"], seqData = [1,2,3,4,5,6,7,...
ghci>length it
53

    • Otherwise, you get first n search results.

      ghci>searchSeq (SubSeq [1,2,3,4]) 17
[OEIS {number = "A000027", ids = ["M0472","N0173"], seqData = [1,2,3,4,5,6,7,8,9,
ghci>length it
17

  • Get first few terms from sub-sequence

    ghci>getSeqData (SubSeq [1,2,2,3,3,3,4,4,4,4])
Just [1,2,2,3,3,3,4,4,4,4,5,5,5,5,5,6,6,6,6,6,6,7,7,7,7,7,7,7,...

  • Get Mathematica function from sub-sequence

    ghci>mathematica <$> lookupSeq (SubSeq [1,2,2,3,3,3,4,4,4,4])
Just ["a[1] = 1; a[n_] := a[n] = a[n - a[n - 1]] + 1 (* _Branko Curgus_, May 12 2009 *)","Table[n, {n, 13}, {n}] // Flatten (* _Robert G. Wilson v_, May 11 2010 *)"]

  • If no search result

    ghci>lookupSeq (ID "1145141919893")
Nothing

ToDo

  • Could use other functions of the searching system written in here.