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.

A208419 Number of nX7 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 0 0 and 0 1 1 vertically.

Table of values

n a(n)
1 42
2 1764
3 14946
4 95265
5 512525
6 2187162
7 8948825
8 33334858
9 118218298
10 407541686
11 1356203815
12 4445860245
13 14341519236
14 45718076241
15 144724484598
16 454821046092
17 1423168065858
18 4437094512913
19 13793035672329
20 42793311531894

List of values

[42, 1764, 14946, 95265, 512525, 2187162, 8948825, 33334858, 118218298, 407541686, 1356203815, 4445860245, 14341519236, 45718076241, 144724484598, 454821046092, 1423168065858, 4437094512913, 13793035672329, 42793311531894]

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

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