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.

A263786 Number of length n arrays of permutations of 0..n-1 with each element moved by -7 to 7 places and exactly two more elements moved upwards than downwards.

Table of values

n a(n)
1 0
2 0
3 0
4 1
5 5
6 66
7 392
8 4859
9 26994
10 232208
11 1161998
12 8246455
13 41787717
14 274395962
15 1457963344
16 9504972075
17 53127306403
18 343749866061
19 1960779086021
20 12451275397390
21 71531553827855
22 445155989823862
23 2568693912325240

List of values

[0, 0, 0, 1, 5, 66, 392, 4859, 26994, 232208, 1161998, 8246455, 41787717, 274395962, 1457963344, 9504972075, 53127306403, 343749866061, 1960779086021, 12451275397390, 71531553827855, 445155989823862, 2568693912325240]

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

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