|
%I #3 Dec 20 2015 11:22:12
%S 16,1057,1750,25663,1066148,11211992,156829155,3678276863,55555604963,
%T 924058858458,17716431261668,297095816076323
%N Number of nX6 integer arrays with each element equal to the number of horizontal, vertical, diagonal and antidiagonal neighbors exactly one smaller than itself.
%C Column 6 of A266067.
%e Some solutions for n=4
%e ..1..0..1..3..1..0....0..1..2..2..0..1....2..1..2..3..2..1....1..1..1..2..1..1
%e ..2..3..2..2..2..1....1..3..3..1..1..1....2..1..0..2..1..0....2..0..2..3..0..2
%e ..2..1..3..0..3..2....2..2..3..1..1..1....2..2..2..1..3..2....2..0..2..3..0..2
%e ..0..1..2..0..0..1....0..1..2..2..0..1....1..0..3..2..1..0....1..1..2..1..1..1
%Y Cf. A266067.
%K nonn
%O 1,1
%A _R. H. Hardin_, Dec 20 2015
| 