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.

A256820 Number of length n+5 0..1 arrays with at most two downsteps in every n consecutive neighbor pairs.

Table of values

n a(n)
1 64
2 128
3 256
4 512
5 956
6 1656
7 2693
8 4158
9 6153
10 8792
11 12202
12 16524
13 21914
14 28544
15 36603
16 46298
17 57855
18 71520
19 87560
20 106264
21 127944
22 152936
23 181601
24 214326
25 251525
26 293640
27 341142
28 394532
29 454342
30 521136
31 595511
32 678098
33 769563
34 870608
35 981972

List of values

[64, 128, 256, 512, 956, 1656, 2693, 4158, 6153, 8792, 12202, 16524, 21914, 28544, 36603, 46298, 57855, 71520, 87560, 106264, 127944, 152936, 181601, 214326, 251525, 293640, 341142, 394532, 454342, 521136, 595511, 678098, 769563, 870608, 981972]