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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.

A130425 a(n) = numerator of Sum_{k=1..n} 1/k^(n+1-k).

Table of values

n a(n)
1 1
2 3
3 19
4 107
5 1471
6 164059
7 65442581
8 26560388929
9 10901416818161
10 4504891039128649
11 20562691778919031051
12 94108143760454361244249
13 5609165278757040127506253363
14 334755533004517896353486403105731

List of values

[1, 3, 19, 107, 1471, 164059, 65442581, 26560388929, 10901416818161, 4504891039128649, 20562691778919031051, 94108143760454361244249, 5609165278757040127506253363, 334755533004517896353486403105731]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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