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.

A262035 Number of permutations of [2n+1] beginning with exactly n ascents.

Table of values

n a(n)
0 1
1 2
2 15
3 168
4 2520
5 47520
6 1081080
7 28828800
8 882161280
9 30474662400
10 1173274502400
11 49819040409600
12 2313026876160000
13 116576554558464000
14 6338850154116480000
15 369890550169620480000
16 23056510960573009920000
17 1529010726859052236800000

List of values

[1, 2, 15, 168, 2520, 47520, 1081080, 28828800, 882161280, 30474662400, 1173274502400, 49819040409600, 2313026876160000, 116576554558464000, 6338850154116480000, 369890550169620480000, 23056510960573009920000, 1529010726859052236800000]

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

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