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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.

A282567 Imaginary part of A000178(n) * Sum_{k=0..n} i^k/k!, where i = sqrt(-1).

Table of values

n a(n)
0 0
1 1
2 2
3 10
4 240
5 29088
6 20943360
7 105529651200
8 4254955536384000
9 1544043321627770880000
10 5603024405522854969344000000
11 223654797931768113135574056960000000
12 107131006056993617020920990202331136000000000
13 667107003169139201955908457896071963607040000000000000

List of values

[0, 1, 2, 10, 240, 29088, 20943360, 105529651200, 4254955536384000, 1544043321627770880000, 5603024405522854969344000000, 223654797931768113135574056960000000, 107131006056993617020920990202331136000000000, 667107003169139201955908457896071963607040000000000000]

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

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