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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.

A087132 a(n) is the sum of the squares of the sizes of the conjugacy classes in the symmetric group S_n.

Table of values

n a(n)
0 1
1 1
2 2
3 14
4 146
5 2602
6 71412
7 2675724
8 134269158
9 8747088662
10 717107850956
11 72007758701716
12 8736187050160132
13 1258160557017484564
14 212232765513231245096
15 41518913481377118146520
16 9309797624034705006898470
17 2374942651509463493006400390
18 683620331016710787068868581580

List of values

[1, 1, 2, 14, 146, 2602, 71412, 2675724, 134269158, 8747088662, 717107850956, 72007758701716, 8736187050160132, 1258160557017484564, 212232765513231245096, 41518913481377118146520, 9309797624034705006898470, 2374942651509463493006400390, 683620331016710787068868581580]

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

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