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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.

A264268 Number of (n+1)X(4+1) arrays of permutations of 0..n*5+4 with each element having index change +-(.,.) 0,0 1,0 or 1,2.

Table of values

n a(n)
1 65
2 1280
3 40626
4 1143000
5 33729146
6 981994496
7 28735927165
8 839596650695
9 24544787527541
10 717416324352000
11 20970567317759053
12 612971699603292777
13 17917345209329491525
14 523728155369756381184
15 15308707141186512270826

List of values

[65, 1280, 40626, 1143000, 33729146, 981994496, 28735927165, 839596650695, 24544787527541, 717416324352000, 20970567317759053, 612971699603292777, 17917345209329491525, 523728155369756381184, 15308707141186512270826]

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

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