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%I #4 Dec 12 2014 06:51:00
%S 1500625,294122500,57648010000,4067643585600,287012931399936,
%T 10332465530397696,371968759094317056,8266815890892066816,
%U 183725765411866546176,2835563471280083174400,43763160717460467360000
%N Number of (n+1)X(7+1) 0..3 arrays with nondecreasing sum of every two consecutive values in every row and column
%C Column 7 of A251974
%H R. H. Hardin, <a href="/A251973/b251973.txt">Table of n, a(n) for n = 1..18</a>
%e Some solutions for n=1
%e ..0..0..0..0..2..0..2..2....0..0..0..0..0..2..1..2....0..0..0..0..0..1..1..2
%e ..0..0..0..2..2..3..2..3....0..1..2..1..3..2..3..2....0..0..0..0..0..0..3..0
%K nonn
%O 1,1
%A _R. H. Hardin_, Dec 12 2014
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