|
%I #4 Jan 12 2014 05:47:25
%S 378,4348,61401,758256,9618173,108503097,1173374675,11635568187,
%T 109453308692,966932051675,8150811220681,65564257527282,
%U 507436990647073,3788110079413002,27409572083960061,192741633876530444
%N Number of (n+1)X(4+1) 0..1 arrays with the sum of each 2X2 subblock two median terms lexicographically nondecreasing rowwise and columnwise
%C Column 4 of A235548
%H R. H. Hardin, <a href="/A235544/b235544.txt">Table of n, a(n) for n = 1..210</a>
%e Some solutions for n=3
%e ..1..0..0..0..1....0..0..0..0..1....0..1..0..0..0....0..1..0..0..1
%e ..0..0..1..1..0....0..0..0..1..1....0..0..0..1..1....0..0..0..0..1
%e ..1..0..1..1..1....1..0..1..0..1....0..0..1..1..1....0..1..1..1..0
%e ..1..0..0..1..0....0..0..1..1..0....0..0..1..1..0....1..0..0..1..1
%K nonn
%O 1,1
%A _R. H. Hardin_, Jan 12 2014
| 