A253522 - OEIS

%I #4 Jan 03 2015 07:53:06

%S 192393,666239,791232,930046,1439791,2662626,5591131,13347833,

%T 35219532,98975447,287819707,851247242,2537610573,7591819430,

%U 22748438826,68210982499,204589792458,613715676841,1841080822709,5523161533648

%N Number of (n+1)X(6+1) 0..2 arrays with every 2X2 subblock diagonal minimum minus antidiagonal minimum nondecreasing horizontally and diagonal maximum minus antidiagonal maximum nondecreasing vertically

%C Column 6 of A253524

%H R. H. Hardin, <a href="/A253522/b253522.txt">Table of n, a(n) for n = 1..210</a>

%F Empirical: a(n) = 9*a(n-1) -33*a(n-2) +65*a(n-3) -75*a(n-4) +51*a(n-5) -19*a(n-6) +3*a(n-7) for n>15

%e Some solutions for n=1

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Jan 03 2015