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.

A094833 Number of (s(0), s(1), ..., s(2n)) such that 0 < s(i) < 9 and |s(i) - s(i-1)| = 1 for i = 1,2,...,2n, s(0) = 3, s(2n) = 5.

Table of values

n a(n)
1 1
2 4
3 15
4 55
5 199
6 714
7 2548
8 9061
9 32148
10 113887
11 403051
12 1425471
13 5039254
14 17809336
15 62928201
16 222324436
17 785402143
18 2774421135
19 9800231959
20 34617003682
21 122274355596
22 431893332397
23 1525507797700
24 5388281150223

List of values

[1, 4, 15, 55, 199, 714, 2548, 9061, 32148, 113887, 403051, 1425471, 5039254, 17809336, 62928201, 222324436, 785402143, 2774421135, 9800231959, 34617003682, 122274355596, 431893332397, 1525507797700, 5388281150223]