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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.

A264274 Number of (3+1)X(n+1) arrays of permutations of 0..n*4+3 with each element having index change +-(.,.) 0,0 1,0 or 1,2.

Table of values

n a(n)
1 25
2 305
3 3721
4 40626
5 443556
6 4861800
7 53290000
8 586058600
9 6445199524
10 70892939818
11 779775536401
12 8576942789777
13 94339901914129
14 1037668357033074
15 11413575775898244
16 125540825889208392
17 1380855507020471056

List of values

[25, 305, 3721, 40626, 443556, 4861800, 53290000, 586058600, 6445199524, 70892939818, 779775536401, 8576942789777, 94339901914129, 1037668357033074, 11413575775898244, 125540825889208392, 1380855507020471056]

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

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