|
%I #4 Nov 03 2012 13:43:50
%S 1,737,28305,900213,28543403,908914463,28976110305,923902607653,
%T 29456613886229,939145718670695,29942165452165937,954626864774112217,
%U 30435761282996284955,970364022192333797121,30937498799139172046789
%N Hilltop maps: number of 5Xn binary arrays indicating the locations of corresponding elements not exceeded by any horizontal or antidiagonal neighbor in a random 0..2 5Xn array
%C Row 5 of A218592
%H R. H. Hardin, <a href="/A218596/b218596.txt">Table of n, a(n) for n = 1..129</a>
%e Some solutions for n=3
%e ..1..1..1....1..0..1....1..0..1....0..1..1....0..0..0....0..1..0....1..0..0
%e ..0..0..0....0..1..1....1..1..1....1..0..0....1..0..0....1..1..1....0..1..0
%e ..0..1..0....0..1..0....0..0..0....0..1..0....0..0..1....1..1..1....1..0..0
%e ..0..1..0....0..0..0....0..0..1....1..1..1....0..1..1....1..1..0....1..0..0
%e ..1..1..0....1..1..1....1..1..1....0..0..1....1..0..0....1..0..0....0..1..1
%K nonn
%O 1,2
%A _R. H. Hardin_ Nov 03 2012
| 