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.

A207499 Number of nX7 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 0 1 and 1 0 0 vertically.

Table of values

n a(n)
1 25
2 625
3 3355
4 17911
5 122061
6 804887
7 5715255
8 40046975
9 287772089
10 2061595205
11 14914823863
12 107929360177
13 784430935831
14 5706698690103
15 41607085900821
16 303627706072811
17 2218432129234439
18 16220034510311323
19 118680071632234053

List of values

[25, 625, 3355, 17911, 122061, 804887, 5715255, 40046975, 287772089, 2061595205, 14914823863, 107929360177, 784430935831, 5706698690103, 41607085900821, 303627706072811, 2218432129234439, 16220034510311323, 118680071632234053]

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

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