A218240 - OEIS

%I #8 Jul 07 2014 11:13:23

%S 57,4065,262017,16776705,1073678481,68715299265,4397778640641,

%T 281457830657025,18013301044272297,1152851258815826049,

%U 73782480049026835329,4722078690155327132673,302213034059098425848289

%N Hilltop maps: number of n X 6 binary arrays indicating the locations of corresponding elements not exceeded by any king-move neighbor in a random 0..3 n X 6 array.

%C Column 6 of A218242.

%H R. H. Hardin, <a href="/A218240/b218240.txt">Table of n, a(n) for n = 1..26</a>

%e Some solutions for n=3:

%e ..0..0..1..1..0..0....0..0..0..1..1..1....0..0..1..0..1..1....0..1..0..0..0..1

%e ..0..1..0..1..1..1....0..0..0..0..1..1....1..0..0..0..1..1....1..1..1..1..0..0

%e ..1..1..1..0..1..1....1..0..0..0..0..0....0..0..0..0..0..1....0..0..0..0..0..0

%K nonn

%O 1,1

%A _R. H. Hardin_, Oct 24 2012