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.

A381941 G.f. A(x) satisfies A(x) = (1 + x)^2 * B(x*A(x)), where B(x) is the g.f. of A002293.

Table of values

n a(n)
0 1
1 3
2 10
3 71
4 644
5 6461
6 68971
7 768054
8 8820281
9 103694479
10 1241799996
11 15095075897
12 185769856443
13 2310006893997
14 28978952155943
15 366315306556482
16 4661272734504606
17 59659914501348239
18 767539555514812321
19 9920124234695256009
20 128744011085858468131
21 1677087982747514335025

List of values

[1, 3, 10, 71, 644, 6461, 68971, 768054, 8820281, 103694479, 1241799996, 15095075897, 185769856443, 2310006893997, 28978952155943, 366315306556482, 4661272734504606, 59659914501348239, 767539555514812321, 9920124234695256009, 128744011085858468131, 1677087982747514335025]