cp's OEIS Frontend

A267785 Number of nX5 0..1 arrays with every repeated value in every row greater than or equal to, and in every column greater than, the previous repeated value.

%I A267785 #4 Jan 20 2016 12:29:01
%S A267785 28,784,5004,34173,122770,460598,1234716,3380133,7591852,17155354,
%T A267785 34199992,67950531,124234066,225071767,385178280,650960709,1057141184,
%U A267785 1692165611,2633057784,4034703001,6058479774,8956146100,13048584888
%N A267785 Number of nX5 0..1 arrays with every repeated value in every row greater than or equal to, and in every column greater than, the previous repeated value.
%C A267785 Column 5 of A267788.
%H A267785 R. H. Hardin, <a href="/A267785/b267785.txt">Table of n, a(n) for n = 1..210</a>
%F A267785 Empirical: a(n) = 2*a(n-1) +8*a(n-2) -18*a(n-3) -27*a(n-4) +72*a(n-5) +48*a(n-6) -168*a(n-7) -42*a(n-8) +252*a(n-9) -252*a(n-11) +42*a(n-12) +168*a(n-13) -48*a(n-14) -72*a(n-15) +27*a(n-16) +18*a(n-17) -8*a(n-18) -2*a(n-19) +a(n-20) for n>22
%e A267785 Some solutions for n=4
%e A267785 ..1..0..0..1..0....0..1..0..0..1....1..0..0..0..1....0..0..1..0..0
%e A267785 ..0..1..1..0..1....0..0..0..0..1....0..0..1..1..1....1..1..0..1..1
%e A267785 ..1..0..0..0..0....1..0..1..1..0....0..1..0..0..0....1..1..1..1..0
%e A267785 ..0..1..0..1..0....1..1..1..1..1....1..1..1..1..1....0..0..0..0..0
%Y A267785 Cf. A267788.
%K A267785 nonn
%O A267785 1,1
%A A267785 _R. H. Hardin_, Jan 20 2016