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.

A274378 G.f. satisfies A(x) = (1 + x*A(x))^2 * (1 + x^2*A(x)^3).

Table of values

n a(n)
0 1
1 2
2 6
3 24
4 111
5 552
6 2873
7 15458
8 85312
9 480314
10 2747845
11 15928080
12 93347153
13 552181372
14 3292571913
15 19769887128
16 119430685503
17 725375643416
18 4426786390959
19 27131644746326
20 166932630227613
21 1030684209393288
22 6383992918008611
23 39657230694169284
24 247008096338698523
25 1542292860296588558
26 9651791500807437834
27 60528789932966226468
28 380333245334293851637
29 2394179659042901060436
30 15096873553004201457425

List of values

[1, 2, 6, 24, 111, 552, 2873, 15458, 85312, 480314, 2747845, 15928080, 93347153, 552181372, 3292571913, 19769887128, 119430685503, 725375643416, 4426786390959, 27131644746326, 166932630227613, 1030684209393288, 6383992918008611, 39657230694169284, 247008096338698523, 1542292860296588558, 9651791500807437834, 60528789932966226468, 380333245334293851637, 2394179659042901060436, 15096873553004201457425]