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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.

A230347 Number of permutations of [2n+7] in which the longest increasing run has length n+7.

Table of values

n a(n)
0 1
1 16
2 287
3 5954
4 142590
5 3900480
6 120466080
7 4156079760
8 158664456720
9 6647965632000
10 303540020784000
11 15009431909472000
12 799414492260384000
13 45641465547245568000
14 2781538377619921920000
15 180263592116387619840000
16 12381113998069012804608000

List of values

[1, 16, 287, 5954, 142590, 3900480, 120466080, 4156079760, 158664456720, 6647965632000, 303540020784000, 15009431909472000, 799414492260384000, 45641465547245568000, 2781538377619921920000, 180263592116387619840000, 12381113998069012804608000]

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

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