Number of (n+2)X(5+2) 0..3 arrays with every 3X3 subblock row and column sum equal to 0 1 3 6 or 7 and every 3X3 diagonal and antidiagonal sum not equal to 0 1 3 6 or 7.

A252189

Number of (n+2)X(5+2) 0..3 arrays with every 3X3 subblock row and column sum equal to 0 1 3 6 or 7 and every 3X3 diagonal and antidiagonal sum not equal to 0 1 3 6 or 7.

Terms

    a(0) =5300a(1) =6368a(2) =8945a(3) =14130a(4) =24956a(5) =37035a(6) =57284a(7) =99128a(8) =151616a(9) =245908a(10) =420808a(11) =657008a(12) =1113688a(13) =1927880a(14) =3098960a(15) =5528048a(16) =9700168a(17) =16202576a(18) =30747088a(19) =54771272a(20) =95341136a(21) =192162896a(22) =346971208a(23) =625763408a(24) =1322237008a(25) =2411214920

External references