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.

A264514 Number of (2n) X (2+1) arrays of permutations of 0..n*6-1 with each element having directed index change -1,0 0,2 -1,-2 or 1,0.

Table of values

n a(n)
1 1
2 3
3 12
4 46
5 177
6 684
7 2640
8 10180
9 39249
10 151326
11 583444
12 2249491
13 8673001
14 33439105
15 128925825
16 497078745
17 1916507251
18 7389171396
19 28489249854
20 109841457681
21 423498192724
22 1632814449360
23 6295382298780
24 24272101648369

List of values

[1, 3, 12, 46, 177, 684, 2640, 10180, 39249, 151326, 583444, 2249491, 8673001, 33439105, 128925825, 497078745, 1916507251, 7389171396, 28489249854, 109841457681, 423498192724, 1632814449360, 6295382298780, 24272101648369]

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

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