Number of (n+2)X(2+2) 0..1 arrays with no 3x3 subblock diagonal sum equal to the antidiagonal sum or central row sum equal to the central column sum.

A258919

Number of (n+2)X(2+2) 0..1 arrays with no 3x3 subblock diagonal sum equal to the antidiagonal sum or central row sum equal to the central column sum.

Terms

    a(0) =576a(1) =1156a(2) =1936a(3) =4096a(4) =9216a(5) =17424a(6) =30976a(7) =66564a(8) =141376a(9) =264196a(10) =501264a(11) =1069156a(12) =2166784a(13) =4080400a(14) =8065600a(15) =16892100a(16) =33362176a(17) =63936016a(18) =128867904a(19) =264387600a(20) =516925696a(21) =1008570564a(22) =2044124944a(23) =4123951524a(24) =8059730176a(25) =15937042564

External references