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.

A264287 Number of (3+1)X(n+1) arrays of permutations of 0..n*4+3 with each element having directed index change 0,0 0,1 1,0 or -1,-2.

Table of values

n a(n)
1 1
2 26
3 132
4 675
5 4189
6 23852
7 134432
8 768664
9 4381032
10 24926476
11 141860756
12 807487003
13 4595740788
14 26154580810
15 148850346356
16 847132073037
17 4821138523341
18 27437703642929
19 156151443585980
20 888677485184057

List of values

[1, 26, 132, 675, 4189, 23852, 134432, 768664, 4381032, 24926476, 141860756, 807487003, 4595740788, 26154580810, 148850346356, 847132073037, 4821138523341, 27437703642929, 156151443585980, 888677485184057]

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

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