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.

A207902 Number of n X n 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 0 0 and 0 1 1 vertically.

Table of values

n a(n)
1 2
2 16
3 102
4 841
5 13865
6 314721
7 6835345
8 167806116
9 7410251162
10 472676875225
11 25730176554865
12 1604226387312025
13 207661113723753822
14 40075955918500009225
15 5496265530262722657980
16 835639569395431034391481

List of values

[2, 16, 102, 841, 13865, 314721, 6835345, 167806116, 7410251162, 472676875225, 25730176554865, 1604226387312025, 207661113723753822, 40075955918500009225, 5496265530262722657980, 835639569395431034391481]

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

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