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.

A046878 Numerator of (1/n)*Sum_{k=0..n-1} 1/binomial(n-1,k) for n>0 else 0.

Table of values

n a(n)
0 0
1 1
2 1
3 5
4 2
5 8
6 13
7 151
8 32
9 83
10 73
11 1433
12 647
13 15341
14 28211
15 10447
16 1216
17 19345
18 18181
19 651745
20 1542158
21 1463914
22 2786599
23 122289917
24 29229544
25 140001721
26 134354573
27 774885169
28 745984697
29 41711914513
30 80530073893
31 4825521853483

List of values

[0, 1, 1, 5, 2, 8, 13, 151, 32, 83, 73, 1433, 647, 15341, 28211, 10447, 1216, 19345, 18181, 651745, 1542158, 1463914, 2786599, 122289917, 29229544, 140001721, 134354573, 774885169, 745984697, 41711914513, 80530073893, 4825521853483]