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.

A212234 Number of 0..2 arrays of length 1+2*n with sum no more than 2*n in any length 2n subsequence (=50% duty cycle).

Table of values

n a(n)
1 14
2 124
3 1113
4 10002
5 89911
6 808403
7 7269626
8 65380788
9 588072207
10 5289869433
11 47586806448
12 428105244789
13 3851528519268
14 34652238703192
15 311776035394625
16 2805210936456962
17 25240510718260791
18 227111596463339585

List of values

[14, 124, 1113, 10002, 89911, 808403, 7269626, 65380788, 588072207, 5289869433, 47586806448, 428105244789, 3851528519268, 34652238703192, 311776035394625, 2805210936456962, 25240510718260791, 227111596463339585]