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.

A094292 Number of (s(0), s(1), ..., s(n)) such that 0 < s(i) < 5 and |s(i) - s(i-1)| <= 1 for i = 1,2,...,n, s(0) = 2, s(n) = 4.

Table of values

n a(n)
0 0
1 0
2 1
3 3
4 9
5 25
6 68
7 182
8 483
9 1275
10 3355
11 8811
12 23112
13 60580
14 158717
15 415715
16 1088661
17 2850645
18 7463884
19 19541994
20 51163695
21 133951675
22 350695511
23 918141623
24 2403740304
25 6293097000
26 16475579353
27 43133687427
28 112925557953
29 295643107825
30 774003961940

List of values

[0, 0, 1, 3, 9, 25, 68, 182, 483, 1275, 3355, 8811, 23112, 60580, 158717, 415715, 1088661, 2850645, 7463884, 19541994, 51163695, 133951675, 350695511, 918141623, 2403740304, 6293097000, 16475579353, 43133687427, 112925557953, 295643107825, 774003961940]