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.

A261648 Expansion of Product_{k>=0} ((1+x^(2*k+1))/(1-x^(2*k+1)))^5.

Table of values

n a(n)
0 1
1 10
2 50
3 180
4 550
5 1512
6 3820
7 9040
8 20310
9 43670
10 90472
11 181540
12 354180
13 674040
14 1254640
15 2289104
16 4101430
17 7228020
18 12546030
19 21473940
20 36281656
21 60565920
22 99974140
23 163297520
24 264110180
25 423211938
26 672244600
27 1059013320
28 1655274320
29 2568068120

List of values

[1, 10, 50, 180, 550, 1512, 3820, 9040, 20310, 43670, 90472, 181540, 354180, 674040, 1254640, 2289104, 4101430, 7228020, 12546030, 21473940, 36281656, 60565920, 99974140, 163297520, 264110180, 423211938, 672244600, 1059013320, 1655274320, 2568068120]