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.

A370751 a(n) = 2^n * [x^n] Product_{k>=1} ((1 + 3*x^k)/(1 - 3*x^k))^(1/2).

Table of values

n a(n)
0 1
1 6
2 30
3 204
4 966
5 5748
6 29388
7 169944
8 886278
9 5169732
10 27794820
11 162920616
12 894445212
13 5274022920
14 29398573272
15 174041671344
16 980746798278
17 5821525480164
18 33071756442708
19 196663513473672
20 1124154722216244
21 6693497121210648
22 38448301937075112
23 229149691659210192

List of values

[1, 6, 30, 204, 966, 5748, 29388, 169944, 886278, 5169732, 27794820, 162920616, 894445212, 5274022920, 29398573272, 174041671344, 980746798278, 5821525480164, 33071756442708, 196663513473672, 1124154722216244, 6693497121210648, 38448301937075112, 229149691659210192]