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.

A080000 Number of permutations satisfying -k<=p(i)-i<=r and p(i)-i not in I, i=1..n, with k=2, r=3, I={-1,1,2}.

Table of values

n a(n)
0 1
1 1
2 1
3 1
4 1
5 2
6 3
7 5
8 7
9 9
10 12
11 16
12 24
13 35
14 50
15 70
16 96
17 135
18 190
19 270
20 383
21 539
22 759
23 1065
24 1500
25 2116
26 2985
27 4212
28 5932
29 8356
30 11770
31 16585
32 23381
33 32953
34 46445
35 65445
36 92216
37 129951
38 183129
39 258091
40 363719
41 512566
42 722316
43 1017886
44 1434445
45 2021476

List of values

[1, 1, 1, 1, 1, 2, 3, 5, 7, 9, 12, 16, 24, 35, 50, 70, 96, 135, 190, 270, 383, 539, 759, 1065, 1500, 2116, 2985, 4212, 5932, 8356, 11770, 16585, 23381, 32953, 46445, 65445, 92216, 129951, 183129, 258091, 363719, 512566, 722316, 1017886, 1434445, 2021476]