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.

A264360 Number of (n+1) X (4+1) arrays of permutations of 0..n*5+4 with each element having directed index change 0,0 0,2 1,0 or -1,-2.

Table of values

n a(n)
1 18
2 120
3 936
4 7168
5 54720
6 418992
7 3204336
8 24514000
9 187528608
10 1434558960
11 10974201216
12 83950973056
13 642212998704
14 4912836726000
15 37582492431888
16 287500651922848
17 2199338537486832
18 16824622797993408
19 128705939150098368

List of values

[18, 120, 936, 7168, 54720, 418992, 3204336, 24514000, 187528608, 1434558960, 10974201216, 83950973056, 642212998704, 4912836726000, 37582492431888, 287500651922848, 2199338537486832, 16824622797993408, 128705939150098368]

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

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