Number of (n+2) X (4+2) 0..3 arrays with every 3 X 3 subblock row and column sum not equal to 0 3 5 6 or 7 and every 3 X 3 diagonal and antidiagonal sum equal to 0 3 5 6 or 7.
A252250
Number of (n+2) X (4+2) 0..3 arrays with every 3 X 3 subblock row and column sum not equal to 0 3 5 6 or 7 and every 3 X 3 diagonal and antidiagonal sum equal to 0 3 5 6 or 7.
Terms
- a(0) =352a(1) =268a(2) =249a(3) =267a(4) =297a(5) =336a(6) =384a(7) =462a(8) =564a(9) =690a(10) =894a(11) =1161a(12) =1491a(13) =2025a(14) =2724a(15) =3588a(16) =4986a(17) =6816a(18) =9078a(19) =12738a(20) =17529a(21) =23451a(22) =33033a(23) =45576a(24) =61080a(25) =86166a(26) =119004a(27) =159594a(28) =225270a(29) =311241
External references
- oeis: A252250