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.

A183979 1/4 the number of (n+1) X 3 binary arrays with all 2 X 2 subblock sums the same.

Table of values

n a(n)
1 6
2 8
3 11
4 17
5 27
6 47
7 83
8 155
9 291
10 563
11 1091
12 2147
13 4227
14 8387
15 16643
16 33155
17 66051
18 131843
19 263171
20 525827
21 1050627
22 2100227
23 4198403
24 8394755
25 16785411
26 33566723
27 67125251
28 134242307
29 268468227
30 536920067
31 1073807363
32 2147581955
33 4295098371

List of values

[6, 8, 11, 17, 27, 47, 83, 155, 291, 563, 1091, 2147, 4227, 8387, 16643, 33155, 66051, 131843, 263171, 525827, 1050627, 2100227, 4198403, 8394755, 16785411, 33566723, 67125251, 134242307, 268468227, 536920067, 1073807363, 2147581955, 4295098371]