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.

A189594 Number of permutations of 1..n with displacements restricted to {-6,-5,-4,-3,-1,0,2}.

Table of values

n a(n)
1 1
2 1
3 2
4 4
5 10
6 23
7 51
8 111
9 225
10 469
11 997
12 2125
13 4569
14 9742
15 20728
16 44075
17 93629
18 199251
19 424146
20 902940
21 1922351
22 4091125
23 8706560
24 18528914
25 39433024
26 83926690
27 178622780
28 380165386
29 809106324
30 1722001443
31 3664905891
32 7799962633

List of values

[1, 1, 2, 4, 10, 23, 51, 111, 225, 469, 997, 2125, 4569, 9742, 20728, 44075, 93629, 199251, 424146, 902940, 1922351, 4091125, 8706560, 18528914, 39433024, 83926690, 178622780, 380165386, 809106324, 1722001443, 3664905891, 7799962633]

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

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