cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A381910 Expansion of (1/x) * Series_Reversion( x / ((1+x)^3 * B(x)) ), where B(x) is the g.f. of A002293.

Table of values

n a(n)
0 1
1 4
2 26
3 222
4 2243
5 25243
6 305217
7 3878731
8 51097713
9 691596081
10 9558970897
11 134347855874
12 1914131985782
13 27582542400252
14 401284140631911
15 5886072268606617
16 86951528919335670
17 1292467847124221832
18 19316795168721092789
19 290107272994659617741
20 4375905051887803660504

List of values

[1, 4, 26, 222, 2243, 25243, 305217, 3878731, 51097713, 691596081, 9558970897, 134347855874, 1914131985782, 27582542400252, 401284140631911, 5886072268606617, 86951528919335670, 1292467847124221832, 19316795168721092789, 290107272994659617741, 4375905051887803660504]