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A267715 Number of nX4 0..1 arrays with every repeated value in every row and column greater than the previous repeated value.

%I A267715 #4 Jan 19 2016 20:14:22
%S A267715 9,81,270,872,1915,4266,7879,14632,24440,40816,63714,99260,147469,
%T A267715 218666,312723,446708,619670,859376,1162558,1573616,2084223,2764010,
%U A267715 3595063,4684320,5997316,7694800,9715586,12296260,15334641,19171946,23645587
%N A267715 Number of nX4 0..1 arrays with every repeated value in every row and column greater than the previous repeated value.
%C A267715 Column 4 of A267719.
%H A267715 R. H. Hardin, <a href="/A267715/b267715.txt">Table of n, a(n) for n = 1..210</a>
%F A267715 Empirical: a(n) = 2*a(n-1) +6*a(n-2) -14*a(n-3) -14*a(n-4) +42*a(n-5) +14*a(n-6) -70*a(n-7) +70*a(n-9) -14*a(n-10) -42*a(n-11) +14*a(n-12) +14*a(n-13) -6*a(n-14) -2*a(n-15) +a(n-16) for n>18
%e A267715 Some solutions for n=5
%e A267715 ..0..1..0..1....0..0..1..0....1..0..1..1....0..1..1..0....0..1..0..0
%e A267715 ..1..0..1..0....0..1..0..0....0..1..1..0....1..0..0..1....1..0..1..0
%e A267715 ..1..0..1..0....1..1..0..1....1..1..0..1....0..0..1..1....0..0..1..1
%e A267715 ..0..1..0..1....1..0..1..0....0..0..1..0....0..1..1..0....1..1..0..1
%e A267715 ..1..0..1..1....0..1..0..1....0..1..0..0....1..0..0..1....1..0..1..0
%Y A267715 Cf. A267719.
%K A267715 nonn
%O A267715 1,1
%A A267715 _R. H. Hardin_, Jan 19 2016