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.

A116637 G.f. satisfies: A(x) = x/series_reversion(x/G(x)) where A(x) + A(-x) = 2*G(x^2) and G(x) is the g.f. of A046646.

Table of values

n a(n)
0 1
1 2
2 2
3 4
4 6
5 14
6 24
7 60
8 110
9 286
10 546
11 1456
12 2856
13 7752
14 15504
15 42636
16 86526
17 240350
18 493350
19 1381380
20 2861430
21 8064030
22 16829280
23 47682960
24 100134216
25 284997384
26 601661144
27 1719031840
28 3645533040
29 10450528048
30 22249511328
31 63967345068

List of values

[1, 2, 2, 4, 6, 14, 24, 60, 110, 286, 546, 1456, 2856, 7752, 15504, 42636, 86526, 240350, 493350, 1381380, 2861430, 8064030, 16829280, 47682960, 100134216, 284997384, 601661144, 1719031840, 3645533040, 10450528048, 22249511328, 63967345068]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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