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.

A036771 Number of labeled rooted trees with a degree constraint: ((3*n)!/(6^n)) * binomial(3*n + 1, n).

Table of values

n a(n)
0 1
1 4
2 420
3 201600
4 264264000
5 734557824000
6 3723191087616000
7 31125877492469760000
8 399532678960326912000000
9 7462849882264211635200000000
10 194563959280510261541299200000000
11 6847568575944052279580806348800000000
12 316573366618757452963440048714547200000000

List of values

[1, 4, 420, 201600, 264264000, 734557824000, 3723191087616000, 31125877492469760000, 399532678960326912000000, 7462849882264211635200000000, 194563959280510261541299200000000, 6847568575944052279580806348800000000, 316573366618757452963440048714547200000000]