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.

A303159 Number of permutations p of [2n+1] such that 0p has exactly n+1 alternating runs.

Table of values

n a(n)
0 1
1 3
2 43
3 1344
4 74211
5 6384708
6 789649750
7 132789007200
8 29145283614115
9 8092186932120060
10 2772830282722806978
11 1149343084932146388144
12 566844242187778610648334
13 328043720353943611689811272
14 220147053200818211779539712908
15 169580070210721829547034445169024

List of values

[1, 3, 43, 1344, 74211, 6384708, 789649750, 132789007200, 29145283614115, 8092186932120060, 2772830282722806978, 1149343084932146388144, 566844242187778610648334, 328043720353943611689811272, 220147053200818211779539712908, 169580070210721829547034445169024]

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

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