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.

A172030 Numerators of the sequence with g.f. x*B(x)/(1-2*x), where B(x) denotes the "original" Bernoulli numbers.

Table of values

n a(n)
0 0
1 1
2 5
3 31
4 31
5 619
6 619
7 5779
8 5779
9 69341
10 69341
11 3051179
12 3051179
13 52884569
14 52884569
15 634649863
16 634649863
17 43152570067
18 43152570067
19 1093376176159
20 1093376176159
21 2623076354557
22 2623076354557
23 241599308325943
24 241599308325943
25 1604223576455477

List of values

[0, 1, 5, 31, 31, 619, 619, 5779, 5779, 69341, 69341, 3051179, 3051179, 52884569, 52884569, 634649863, 634649863, 43152570067, 43152570067, 1093376176159, 1093376176159, 2623076354557, 2623076354557, 241599308325943, 241599308325943, 1604223576455477]