Number of (n+2)X(1+2) 0..3 arrays with every 3X3 subblock row and diagonal sum equal to 2 3 4 6 or 7 and every 3X3 column and antidiagonal sum not equal to 2 3 4 6 or 7.

A252400

Number of (n+2)X(1+2) 0..3 arrays with every 3X3 subblock row and diagonal sum equal to 2 3 4 6 or 7 and every 3X3 column and antidiagonal sum not equal to 2 3 4 6 or 7.

Terms

    a(0) =458a(1) =293a(2) =319a(3) =426a(4) =631a(5) =964a(6) =1529a(7) =2517a(8) =4097a(9) =6733a(10) =11338a(11) =18763a(12) =31112a(13) =52651a(14) =87448a(15) =145315a(16) =246213a(17) =409305a(18) =680501a(19) =1153412a(20) =1918155a(21) =3189604a(22) =5407047a(23) =8994424a(24) =14957867a(25) =25359593a(26) =42194737a(27) =70176577a(28) =118990108a(29) =198028549

External references