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.

A263751 Number of length n arrays of permutations of 0..n-1 with each element moved by -7 to 7 places and every three consecutive elements having its maximum within 5 of its minimum.

Table of values

n a(n)
1 1
2 2
3 6
4 24
5 120
6 720
7 2400
8 5424
9 7872
10 13426
11 32600
12 93648
13 264004
14 715068
15 1827984
16 4478968
17 10877260
18 27046668
19 68563740
20 175638421
21 449813745
22 1144182205
23 2889559249
24 7280740314
25 18358582526
26 46400942072
27 117521209250
28 297858254334

List of values

[1, 2, 6, 24, 120, 720, 2400, 5424, 7872, 13426, 32600, 93648, 264004, 715068, 1827984, 4478968, 10877260, 27046668, 68563740, 175638421, 449813745, 1144182205, 2889559249, 7280740314, 18358582526, 46400942072, 117521209250, 297858254334]

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

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