|
%I #4 Jan 03 2015 09:09:51
%S 85663,176266,327147,949158,1744459,4292539,8304638,18590483,37412196,
%T 79632497,161715507,333968028,674473122,1366396447,2737489031,
%U 5482593881,10922295848,21751547857,43229912120,85944892631,170816625840
%N Number of (n+1)X(6+1) 0..2 arrays with every 2X2 subblock antidiagonal maximum minus diagonal minimum nondecreasing horizontally and diagonal maximum minus antidiagonal minimum nondecreasing vertically
%C Column 6 of A253533
%H R. H. Hardin, <a href="/A253531/b253531.txt">Table of n, a(n) for n = 1..210</a>
%F Empirical: a(n) = 10*a(n-1) -37*a(n-2) +42*a(n-3) +106*a(n-4) -388*a(n-5) +284*a(n-6) +632*a(n-7) -1382*a(n-8) +364*a(n-9) +1690*a(n-10) -1924*a(n-11) -208*a(n-12) +1808*a(n-13) -1076*a(n-14) -392*a(n-15) +751*a(n-16) -262*a(n-17) -93*a(n-18) +106*a(n-19) -34*a(n-20) +4*a(n-21) for n>42
%e Some solutions for n=2
%e ..0..0..1..1..2..1..2....0..1..0..0..1..0..2....2..0..1..0..1..1..2
%e ..0..0..0..0..1..0..2....1..2..1..0..2..0..2....2..1..1..0..0..0..0
%e ..0..1..1..2..2..0..2....1..2..1..0..2..0..2....0..2..2..2..2..2..2
%K nonn
%O 1,1
%A _R. H. Hardin_, Jan 03 2015
| 