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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.

A349963 a(n) = Sum_{k=0..n} (2*k)^n.

Table of values

n a(n)
0 1
1 2
2 20
3 288
4 5664
5 141600
6 4298944
7 153638912
8 6319260672
9 294044152320
10 15272286131200
11 875880428003328
12 54976337351106560
13 3748609104907476992
14 275924407293425336320
15 21806398621389422592000
16 1841661678145084557099008
17 165530736067119754944577536

List of values

[1, 2, 20, 288, 5664, 141600, 4298944, 153638912, 6319260672, 294044152320, 15272286131200, 875880428003328, 54976337351106560, 3748609104907476992, 275924407293425336320, 21806398621389422592000, 1841661678145084557099008, 165530736067119754944577536]

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

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