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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.

A264288 Number of (4+1)X(n+1) arrays of permutations of 0..n*5+4 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 69
3 556
4 4484
5 47492
6 448821
7 4227024
8 40561798
9 385401502
10 3654429812
11 34690006705
12 329163589542
13 3121764930650
14 29603292090987
15 280717647093650
16 2661785027200918
17 25238274365506684
18 239298584328248763

List of values

[1, 69, 556, 4484, 47492, 448821, 4227024, 40561798, 385401502, 3654429812, 34690006705, 329163589542, 3121764930650, 29603292090987, 280717647093650, 2661785027200918, 25238274365506684, 239298584328248763]

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

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