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.

A262844 Number of (n+2) X (2+2) 0..1 arrays with each row divisible by 7 and column not divisible by 7, read as a binary number with top and left being the most significant bits.

Table of values

n a(n)
1 6
2 34
3 132
4 396
5 1264
6 3962
7 11886
8 35914
9 108556
10 325668
11 976552
12 2931922
13 8795766
14 26370674
15 79104084
16 237312252
17 711756448
18 2135076202
19 6405228606
20 19214238554
21 57640739420
22 172922218260
23 518757049560
24 1556255741762
25 4668767225286

List of values

[6, 34, 132, 396, 1264, 3962, 11886, 35914, 108556, 325668, 976552, 2931922, 8795766, 26370674, 79104084, 237312252, 711756448, 2135076202, 6405228606, 19214238554, 57640739420, 172922218260, 518757049560, 1556255741762, 4668767225286]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement.