|
%I #4 Apr 21 2018 12:50:38
%S 16,9,19,74,139,410,1799,5907,16494,53290,184915,593160,1846238,
%T 5986532,19644799,63120477,201894029,652765881,2113653016,6806905917,
%U 21913260238,70736938785,228339832475,736091706666,2373144545904,7656031069031
%N Number of 5Xn 0..1 arrays with every element equal to 0, 1, 4, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
%C Row 5 of A303314.
%H R. H. Hardin, <a href="/A303317/b303317.txt">Table of n, a(n) for n = 1..210</a>
%F Empirical: a(n) = 2*a(n-1) -a(n-2) +11*a(n-3) +21*a(n-4) -13*a(n-5) +5*a(n-6) -37*a(n-7) -34*a(n-8) +4*a(n-9) -20*a(n-10) +18*a(n-11) -7*a(n-12) for n>16
%e Some solutions for n=5
%e ..0..1..0..1..0. .0..0..0..1..0. .0..1..0..1..0. .0..0..0..1..0
%e ..0..0..0..1..0. .0..1..0..1..0. .0..1..1..1..0. .0..1..0..1..0
%e ..0..1..1..1..0. .0..1..0..1..0. .0..1..0..1..0. .0..1..0..1..0
%e ..0..1..0..0..0. .0..0..0..1..0. .0..1..0..0..0. .0..1..0..0..0
%e ..0..1..0..1..1. .0..1..0..1..0. .0..1..0..1..0. .0..1..0..1..0
%Y Cf. A303314.
%K nonn
%O 1,1
%A _R. H. Hardin_, Apr 21 2018
|
