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.

A263784 Number of length n arrays of permutations of 0..n-1 with each element moved by -5 to 5 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
7 267
8 1721
9 6618
10 35203
11 144762
12 741173
13 3224052
14 16013645
15 70410201
16 336946471
17 1484278684
18 6936580487
19 30771798007
20 142201264901
21 634570792805
22 2910183388216
23 13025117664481
24 59369311030590

List of values

[0, 0, 0, 1, 5, 66, 267, 1721, 6618, 35203, 144762, 741173, 3224052, 16013645, 70410201, 336946471, 1484278684, 6936580487, 30771798007, 142201264901, 634570792805, 2910183388216, 13025117664481, 59369311030590]

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

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