A181210 Number of nX6 binary matrices with no two 1's adjacent diagonally or antidiagonally.

64, 441, 9025, 104976, 1630729, 21836929, 315701824, 4388400025, 62249751001, 873880953856, 12333757683025, 173597094140625, 2446840043215936, 34462915406893801, 485580777431805169, 6840488501157755536

Offset: 1

Author

R. H. Hardin Oct 10 2010

Keywords

• nonn

Comments

Column 6 of A181212

Links

• R. H. Hardin, Table of n, a(n) for n=1..100

Formula

Empirical: a(n)=15*a(n-1)+52*a(n-2)-1045*a(n-3)+803*a(n-4)+17330*a(n-5)-30225*a(n-6)-98253*a(n-7)+228176*a(n-8)+160607*a(n-9)-559589*a(n-10)+6282*a(n-11)+499824*a(n-12)-154008*a(n-13)-117936*a(n-14)+46656*a(n-15)