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.

A208008 Number of n X n 0..1 arrays avoiding 0 0 0 and 1 0 1 horizontally and 0 0 1 and 0 1 1 vertically.

Table of values

n a(n)
1 2
2 16
3 90
4 841
5 5952
6 43264
7 393049
8 4084441
9 32673396
10 334012176
11 3665311664
12 37536737536
13 385814058880
14 4801282939489
15 53629177761313
16 628423124320161
17 7905277739708518
18 101862335149216849
19 1250237739999352500

List of values

[2, 16, 90, 841, 5952, 43264, 393049, 4084441, 32673396, 334012176, 3665311664, 37536737536, 385814058880, 4801282939489, 53629177761313, 628423124320161, 7905277739708518, 101862335149216849, 1250237739999352500]

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

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