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.

A263742 Number of length n arrays of permutations of 0..n-1 with each element moved by -6 to 6 places and equal numbers of elements moved upwards and downwards.

Table of values

n a(n)
1 1
2 2
3 4
4 14
5 46
6 282
7 1394
8 10090
9 44914
10 266476
11 1144246
12 6123066
13 27514165
14 148657877
15 712133826
16 3868859444
17 19001179140
18 101945373036
19 505520499480
20 2672357669178
21 13361279040764
22 70132283967884
23 354087976208204

List of values

[1, 2, 4, 14, 46, 282, 1394, 10090, 44914, 266476, 1144246, 6123066, 27514165, 148657877, 712133826, 3868859444, 19001179140, 101945373036, 505520499480, 2672357669178, 13361279040764, 70132283967884, 354087976208204]

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

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