|
%I #8 Apr 13 2023 15:39:54
%S 22235391,6415409881,2080498882227,802997664018905,314952766527081107
%N Number of (n+1) X 9 0..2 arrays with no 2 X 2 subblock sum differing from a horizontal or vertical neighbor subblock sum by more than one.
%C Column 8 of A183971.
%e Some solutions for 3 X 9
%e ..0..0..0..0..2..0..0..0..0....0..0..0..0..2..0..1..1..0
%e ..1..0..1..0..0..0..1..0..1....1..0..1..0..0..0..0..0..0
%e ..0..0..0..0..1..1..0..0..1....0..0..0..0..1..1..0..2..0
%e ...
%e ...1..1..1..2..2..1..1..1.......1..1..1..2..2..1..2..1...
%e ...1..1..1..1..2..2..1..2.......1..1..1..1..2..1..2..2...
%Y Cf. A183971.
%K nonn
%O 1,1
%A _R. H. Hardin_, Jan 08 2011
| 