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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.

A282564 Real part of A000178(n) * Sum_{k=0..n} i^k/k!, where i = sqrt(-1).

Table of values

n a(n)
0 1
1 1
2 1
3 6
4 156
5 18720
6 13443840
7 67756953600
8 2732085780480000
9 991419288020582400000
10 3597660477435617162035200000
11 143607093745702043133526671360000000
12 68788027941331539080620236035063808000000000
13 428344480781652673551035086691251861743206400000000000

List of values

[1, 1, 1, 6, 156, 18720, 13443840, 67756953600, 2732085780480000, 991419288020582400000, 3597660477435617162035200000, 143607093745702043133526671360000000, 68788027941331539080620236035063808000000000, 428344480781652673551035086691251861743206400000000000]

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

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