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.

A337597 a(0) = 1; a(n) = (1/n) * Sum_{k=1..n} binomial(n,k)^2 * k * 6^(k-1) * a(n-k).

Table of values

n a(n)
0 1
1 1
2 8
3 96
4 1896
5 55416
6 2182752
7 111162528
8 7088997888
9 550749341952
10 51058009732608
11 5556160183592448
12 699989463219105792
13 100917906076208203776
14 16486415052067886690304
15 3026039346413717945757696
16 619431153899977856767131648
17 140491838894751995366936641536
18 35102748598142373142198776889344

List of values

[1, 1, 8, 96, 1896, 55416, 2182752, 111162528, 7088997888, 550749341952, 51058009732608, 5556160183592448, 699989463219105792, 100917906076208203776, 16486415052067886690304, 3026039346413717945757696, 619431153899977856767131648, 140491838894751995366936641536, 35102748598142373142198776889344]