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.

A189600 Number of permutations of 1..n with displacements restricted to {-7,-6,-5,-4,-3,-2,0,1}.

Table of values

n a(n)
1 1
2 1
3 2
4 4
5 7
6 12
7 21
8 37
9 64
10 111
11 194
12 339
13 591
14 1030
15 1796
16 3132
17 5461
18 9522
19 16604
20 28953
21 50485
22 88030
23 153498
24 267655
25 466710
26 813802
27 1419027
28 2474358
29 4314538
30 7523260
31 13118310
32 22874400
33 39886095
34 69549390
35 121273283
36 211464244

List of values

[1, 1, 2, 4, 7, 12, 21, 37, 64, 111, 194, 339, 591, 1030, 1796, 3132, 5461, 9522, 16604, 28953, 50485, 88030, 153498, 267655, 466710, 813802, 1419027, 2474358, 4314538, 7523260, 13118310, 22874400, 39886095, 69549390, 121273283, 211464244]

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

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