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.

A372214 a(n) is equal to the n-th order Taylor polynomial (centered at 0) of G(x)^n evaluated at x = 1, where G(x) = (1 - 2*x - sqrt(1 - 8*x + 4*x^2))/(2*x).

Table of values

n a(n)
0 1
1 4
2 40
3 487
4 6376
5 86629
6 1203823
7 16984678
8 242274280
9 3484593028
10 50444222665
11 734066291974
12 10728052396111
13 157349171819155
14 2314894133906086
15 34145661019248487
16 504810905195542504
17 7478066502444399439
18 110972913533524676080
19 1649407167353221551706
20 24549982881130265421001

List of values

[1, 4, 40, 487, 6376, 86629, 1203823, 16984678, 242274280, 3484593028, 50444222665, 734066291974, 10728052396111, 157349171819155, 2314894133906086, 34145661019248487, 504810905195542504, 7478066502444399439, 110972913533524676080, 1649407167353221551706, 24549982881130265421001]