A251973 - OEIS

%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