A219309 - OEIS

%I #5 Jul 11 2023 08:06:51

%S 37,1157,43725,1574278,54797587,1935133104,68906619754,2448261182674,

%T 86782430779997

%N Unchanging value maps: number of n X 7 binary arrays indicating the locations of corresponding elements unequal to no horizontal or vertical neighbor in a random 0..2 n X 7 array.

%C Column 7 of A219310.

%e Some solutions for n=3

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

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

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

%Y Cf. A219310.

%K nonn

%O 1,1

%A _R. H. Hardin_, Nov 17 2012