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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.

A344419 a(n) = n*a(n-1) + n^(n mod 2), a(0) = 0.

Table of values

n a(n)
0 0
1 1
2 3
3 12
4 49
5 250
6 1501
7 10514
8 84113
9 757026
10 7570261
11 83272882
12 999274585
13 12990569618
14 181867974653
15 2728019619810
16 43648313916961
17 742021336588354
18 13356384058590373
19 253771297113217106
20 5075425942264342121
21 106583944787551184562
22 2344846785326126060365

List of values

[0, 1, 3, 12, 49, 250, 1501, 10514, 84113, 757026, 7570261, 83272882, 999274585, 12990569618, 181867974653, 2728019619810, 43648313916961, 742021336588354, 13356384058590373, 253771297113217106, 5075425942264342121, 106583944787551184562, 2344846785326126060365]

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

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