|
%I #5 Dec 18 2015 18:18:15
%S 1,13,449,56629,28543403,57707873919,467122877883141,
%T 15124271280844676313,1958173356335852318774549,
%U 1013875932726564267833657180687
%N Hilltop maps: number of n X n binary arrays indicating the locations of corresponding elements not exceeded by any horizontal or antidiagonal neighbor in a random 0..2 n X n array
%C Diagonal of A218592
%e Some solutions for n=3
%e ..1..1..0....1..1..0....0..0..1....0..1..0....1..0..0....1..0..0....1..0..1
%e ..1..0..1....0..0..1....0..0..1....1..1..0....0..1..1....1..0..0....1..0..1
%e ..0..1..1....1..0..0....0..0..0....1..1..0....1..0..1....0..1..0....1..1..1
%K nonn
%O 1,2
%A _R. H. Hardin_ Nov 03 2012
| 