A300377 - OEIS

%I #4 Mar 04 2018 09:18:11

%S 1,13,8,80,389,1351,6577,29663,128834,599170,2699986,12281509,

%T 55927064,254229616,1157066602,5264547159,23955687707,109010980492,

%U 496054309841,2257324649817,10272085855116,46743877888337,212711266268337

%N Number of nX5 0..1 arrays with every element equal to 0, 2 or 3 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

%C Column 5 of A300380.

%H R. H. Hardin, <a href="/A300377/b300377.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A300380.

%K nonn

%O 1,2

%A _R. H. Hardin_, Mar 04 2018