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.

A263638 Number of length n arrays of permutations of 0..n-1 with each element moved by -3 to 3 places and with no two consecutive increases.

Table of values

n a(n)
1 1
2 2
3 5
4 17
5 41
6 75
7 156
8 340
9 738
10 1567
11 3327
12 7136
13 15258
14 32589
15 69621
16 148780
17 317987
18 679467
19 1451887
20 3102670
21 6630039
22 14167934
23 30275260
24 64695775
25 138248719
26 295425310
27 631295545
28 1349022959
29 2882734510
30 6160146104

List of values

[1, 2, 5, 17, 41, 75, 156, 340, 738, 1567, 3327, 7136, 15258, 32589, 69621, 148780, 317987, 679467, 1451887, 3102670, 6630039, 14167934, 30275260, 64695775, 138248719, 295425310, 631295545, 1349022959, 2882734510, 6160146104]

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

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