login
Number of (n+1)X(5+1) 0..3 arrays with every 2X2 subblock summing to 3 6 or 9
1

%I #4 Dec 01 2014 11:50:34

%S 67204,1221748,24846540,579830068,15595789732,475709341972,

%T 15983177343168,574357430022192,21570855922182588,833318578006296572,

%U 32774523853539209184,1303789288402465686964,52243908745934340568048

%N Number of (n+1)X(5+1) 0..3 arrays with every 2X2 subblock summing to 3 6 or 9

%C Column 5 of A251300

%H R. H. Hardin, <a href="/A251297/b251297.txt">Table of n, a(n) for n = 1..134</a>

%e Some solutions for n=1

%e ..0..3..0..1..2..2....3..2..1..3..0..3....1..3..2..3..0..0....1..2..1..3..0..0

%e ..3..3..3..2..1..1....1..3..3..2..1..2....2..0..1..3..0..3....2..1..2..0..3..0

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 01 2014