Number of (n+3)X(3+3) 0..1 arrays with no 4x4 subblock diagonal sum not equal the antidiagonal sum.

A258952

Number of (n+3)X(3+3) 0..1 arrays with no 4x4 subblock diagonal sum not equal the antidiagonal sum.

Terms

    a(0) =357600a(1) =605904a(2) =1188294a(3) =2292662a(4) =4268548a(5) =8889408a(6) =18461564a(7) =38504536a(8) =81927058a(9) =175124024a(10) =382949392a(11) =840384096a(12) =1854763390a(13) =4145247490a(14) =9298939358a(15) =21035251042a(16) =47859954190a(17) =109376397754a(18) =251699350766a(19) =581573274808

External references