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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.

A036360 a(n) = Sum_{k=1..n} n! * n^(n-k+1) / (n-k)!.

Table of values

n a(n)
0 0
1 1
2 12
3 153
4 2272
5 39225
6 776736
7 17398969
8 435538944
9 12058401393
10 366021568000
11 12090393761721
12 431832459644928
13 16585599200808937
14 681703972229640192
15 29858718555221585625
16 1388451967046195347456
17 68316647610168842824161
18 3546179063131198669848576
19 193670918442059606406896473

List of values

[0, 1, 12, 153, 2272, 39225, 776736, 17398969, 435538944, 12058401393, 366021568000, 12090393761721, 431832459644928, 16585599200808937, 681703972229640192, 29858718555221585625, 1388451967046195347456, 68316647610168842824161, 3546179063131198669848576, 193670918442059606406896473]

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

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