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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.

A263971 Number of (n+1)X(4+1) arrays of permutations of 0..n*5+4 with each element having index change (+-,+-) 0,2 1,1 or 1,0.

Table of values

n a(n)
1 465
2 10720
3 2604481
4 226810352
5 31702909989
6 3594130469760
7 448695451459909
8 53640316831369632
9 6540831457433886617
10 790462142954177461984
11 95918547752313363235977
12 11617678126362988189598288

List of values

[465, 10720, 2604481, 226810352, 31702909989, 3594130469760, 448695451459909, 53640316831369632, 6540831457433886617, 790462142954177461984, 95918547752313363235977, 11617678126362988189598288]

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

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