91122

Appears in sequences

• G.f.: x*(1+x+x^2)*(1+6*x+8*x^2+4*x^3-x^4)/((1+x)^2*(1-x)^4).at n=35A147691
• Number of (n+2)X5 binary matrices with every 3X3 block having exactly four 1's.at n=6A181257
• Number of (n+2)X9 binary matrices with every 3X3 block having exactly four 1's.at n=2A181261
• T(n,k) = number of (n+2) X (k+2) binary matrices with every 3 X 3 block having exactly four 1's.at n=38A181262
• T(n,k) = number of (n+2) X (k+2) binary matrices with every 3 X 3 block having exactly four 1's.at n=42A181262