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.

A264486 Number of (n+1)X(3+1) arrays of permutations of 0..n*4+3 with each element having directed index change 2,-1 1,0 2,1 0,-1 -2,-2 or -1,0.

Table of values

n a(n)
1 1
2 10
3 36
4 212
5 2144
6 9714
7 92052
8 581575
9 4510937
10 31398740
11 236553733
12 1681262954
13 12489549989
14 90270132471
15 663622115288
16 4832089305548
17 35389917941640
18 258336002558736
19 1889497035402309
20 13806771114617572

List of values

[1, 10, 36, 212, 2144, 9714, 92052, 581575, 4510937, 31398740, 236553733, 1681262954, 12489549989, 90270132471, 663622115288, 4832089305548, 35389917941640, 258336002558736, 1889497035402309, 13806771114617572]

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

Content is available under The OEIS End-User License Agreement.