## OEIS.jl

A basic wrapper to allow access to OEIS from within Julia.
Popularity
17 Stars
Updated Last
1 Year Ago
Started In
June 2015

# OEIS

A wrapper that lets you query OEIS from within Julia.

```julia> using OEIS

julia> oeis([1,1,2,3,5,8,13,21,35]) # search matching sequences
4-element Array{IntegerSequence{T<:Integer},1}:
IntegerSequence{Int64}: A229194
Integers nearest to (2^((n-3)/2) + 3^((n-3)/2)).
1,1,1,2,3,5,8,13,21,35,58,97,163,275,466,793,1353,2315,3969,6817,...
IntegerSequence{Int64}: A005170
Erroneous version of A226999.
1,0,1,1,2,3,5,8,13,21,35,55,93,149,248,403,670,1082
IntegerSequence{Int64}: A226999
Inverse Euler transform of A005169 (fountains of coins).
1,0,1,1,2,3,5,8,13,21,35,55,93,149,248,403,671,1098,1827,3013,...
IntegerSequence{Int64}: A218032
G.f. A(x) satisfies A(x) = 1 + x / (1- x * A(x^2)).
1,1,1,1,2,3,5,8,13,21,35,57,94,154,254,417,687,1129,1859,3057,...

julia> s = oeis(:A000246) # symbols search by id
IntegerSequence{Integer}: A000246
Number of permutations in the symmetric group S_n that have odd order.
1,1,1,3,9,45,225,1575,11025,99225,893025,9823275,108056025,1404728325,18261468225,273922023375,4108830350625,69850115960625,1187451971330625,22561587455281875,...

julia> s.id
:A000246

julia> s.name
"Number of permutations in the symmetric group S_n that have odd order."

julia> s.values
23-element Array{Integer,1}:
1
1
1
3
9
45
225
1575
11025
99225
893025
9823275
108056025
1404728325
18261468225
273922023375
4108830350625
69850115960625
1187451971330625
22561587455281875
428670161650355625
9002073394657468125
189043541287806830625```