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.

A189338 Number of nX4 binary arrays without the pattern 1 0 0 1 diagonally, vertically, antidiagonally or horizontally.

Table of values

n a(n)
1 15
2 225
3 3375
4 36626
5 390721
6 3988168
7 42069350
8 442969881
9 4709354541
10 49857094654
11 528436125424
12 5591212296038
13 59196669906872
14 626540356943069
15 6633322246811551
16 70220475509151710
17 743409267344795743

List of values

[15, 225, 3375, 36626, 390721, 3988168, 42069350, 442969881, 4709354541, 49857094654, 528436125424, 5591212296038, 59196669906872, 626540356943069, 6633322246811551, 70220475509151710, 743409267344795743]

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

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