cp's OEIS Frontend

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.

A144888 Second column (m=2) of triangle A144886 (S1hat(4)).

Table of values

n a(n)
0 1
1 4
2 36
3 200
4 1720
5 12480
6 118560
7 1081920
8 11793600
9 131443200
10 1658764800
11 21990528000
12 319711795200
13 4922394624000
14 81508654080000
15 1428114530304000
16 26582538673152000
17 521466739605504000
18 10779099461222400000
19 233753593186713600000
20 5310546788872765440000

List of values

[1, 4, 36, 200, 1720, 12480, 118560, 1081920, 11793600, 131443200, 1658764800, 21990528000, 319711795200, 4922394624000, 81508654080000, 1428114530304000, 26582538673152000, 521466739605504000, 10779099461222400000, 233753593186713600000, 5310546788872765440000]

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

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