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.

A263763 Number of length n arrays of permutations of 0..n-1 with each element moved by -7 to 7 places and exactly one more element moved upwards than downwards.

Table of values

n a(n)
1 0
2 0
3 1
4 4
5 31
6 146
7 1289
8 7736
9 68811
10 354568
11 2562282
12 12614090
13 80560052
14 406847624
15 2530379183
16 13576171696
17 85562497735
18 476311791218
19 2983359368303
20 16861046247216
21 104017882519889
22 591843352618090
23 3599197579892399

List of values

[0, 0, 1, 4, 31, 146, 1289, 7736, 68811, 354568, 2562282, 12614090, 80560052, 406847624, 2530379183, 13576171696, 85562497735, 476311791218, 2983359368303, 16861046247216, 104017882519889, 591843352618090, 3599197579892399]

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

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