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.

A128386 Expansion of c(3*x^2)/(1-x*c(3*x^2)), c(x) the g.f. of A000108.

Table of values

n a(n)
0 1
1 1
2 4
3 7
4 28
5 58
6 232
7 523
8 2092
9 4966
10 19864
11 48838
12 195352
13 492724
14 1970896
15 5068915
16 20275660
17 52955950
18 211823800
19 560198962
20 2240795848
21 5987822380
22 23951289520
23 64563867454
24 258255469816
25 701383563388
26 2805534253552

List of values

[1, 1, 4, 7, 28, 58, 232, 523, 2092, 4966, 19864, 48838, 195352, 492724, 1970896, 5068915, 20275660, 52955950, 211823800, 560198962, 2240795848, 5987822380, 23951289520, 64563867454, 258255469816, 701383563388, 2805534253552]