OFFSET
0,2
LINKS
Andrew Howroyd, Table of n, a(n) for n = 0..20
EXAMPLE
The a(4) = 10 matrices are:
[0 0 0 0] [0 0 0 1] [0 0 1 1] [0 1 0 1] [0 1 1 0]
[0 0 0 0] [0 0 1 0] [0 0 1 1] [0 1 0 1] [0 1 1 0]
[0 0 0 0] [0 1 0 0] [1 1 0 0] [1 0 1 0] [1 0 0 1]
[0 0 0 0] [1 0 0 0] [1 1 0 0] [1 0 1 0] [1 0 0 1]
.
[0 0 1 1] [0 0 1 1] [0 1 0 1] [0 1 1 1] [1 1 1 1]
[0 1 1 0] [0 1 0 1] [0 1 1 0] [1 0 1 1] [1 1 1 1]
[1 0 0 1] [1 0 1 0] [1 0 0 1] [1 1 0 1] [1 1 1 1]
[1 1 0 0] [1 1 0 0] [1 0 1 0] [1 1 1 0] [1 1 1 1]
CROSSREFS
KEYWORD
nonn
AUTHOR
Andrew Howroyd, Apr 18 2020
STATUS
approved