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.

A255104 Number of length n+5 0..2 arrays with at most one downstep in every 5 consecutive neighbor pairs.

Table of values

n a(n)
1 294
2 597
3 1302
4 2951
5 6582
6 14001
7 29147
8 61542
9 133392
10 292534
11 634197
12 1353282
13 2874273
14 6149472
15 13283988
16 28746325
17 61881375
18 132509427
19 283590718
20 609038592
21 1311917331
22 2825639015
23 6072583563
24 13028913003
25 27962048781

List of values

[294, 597, 1302, 2951, 6582, 14001, 29147, 61542, 133392, 292534, 634197, 1353282, 2874273, 6149472, 13283988, 28746325, 61881375, 132509427, 283590718, 609038592, 1311917331, 2825639015, 6072583563, 13028913003, 27962048781]