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.

A159121 Number of permutations of 1..n containing the relative rank sequence { 146523 } at any spacing.

Table of values

n a(n)
6 1
7 37
8 893
9 18156
10 341049
11 6184359
12 110865138
13 1992632288
14 36228489065
15 670284655152

List of values

[1, 37, 893, 18156, 341049, 6184359, 110865138, 1992632288, 36228489065, 670284655152]