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.

A184461 Half the number of (n+1) X 4 binary arrays with equal numbers of majority one 2 X 2 subblocks and majority zero 2 X 2 subblocks.

Table of values

n a(n)
1 26
2 244
3 3090
4 42874
5 616534
6 9016218
7 133687638
8 2002023718
9 30215911640
10 458822048550
11 7001737409868
12 107286031628502
13 1649589497350886
14 25437988001627234
15 393268526198504728
16 6093317202558667778

List of values

[26, 244, 3090, 42874, 616534, 9016218, 133687638, 2002023718, 30215911640, 458822048550, 7001737409868, 107286031628502, 1649589497350886, 25437988001627234, 393268526198504728, 6093317202558667778]