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.

A263743 Number of length n arrays of permutations of 0..n-1 with each element moved by -7 to 7 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 12658
9 68834
10 535262
11 2657220
12 17475120
13 85950104
14 527877048
15 2718408447
16 16862137915
17 91926451748
18 573370470804
19 3205404296496
20 19797261171758
21 111841627799232
22 680889785121642
23 3871436713513634

List of values

[1, 2, 4, 14, 46, 282, 1394, 12658, 68834, 535262, 2657220, 17475120, 85950104, 527877048, 2718408447, 16862137915, 91926451748, 573370470804, 3205404296496, 19797261171758, 111841627799232, 680889785121642, 3871436713513634]

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

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