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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.

A320963 a(n) = Sum_{j=0..n} Sum_{k=0..j} abs( Stirling1(j - k, k) ).

Table of values

n a(n)
0 1
1 1
2 2
3 3
4 6
5 15
6 51
7 227
8 1257
9 8296
10 63394
11 549740
12 5330185
13 57117590
14 670163058
15 8543228103
16 117564576721
17 1736762231296
18 27411856376831
19 460320540171210
20 8194312180092795
21 154127845115561811
22 3054239953905841713
23 63597989583700047353
24 1388275729125313815336

List of values

[1, 1, 2, 3, 6, 15, 51, 227, 1257, 8296, 63394, 549740, 5330185, 57117590, 670163058, 8543228103, 117564576721, 1736762231296, 27411856376831, 460320540171210, 8194312180092795, 154127845115561811, 3054239953905841713, 63597989583700047353, 1388275729125313815336]

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

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