Number of (n+2) X (4+2) 0..3 arrays with every 3 X 3 subblock row and diagonal sum equal to 0 3 5 6 or 7 and every 3 X 3 column and antidiagonal sum not equal to 0 3 5 6 or 7.
A252380
Number of (n+2) X (4+2) 0..3 arrays with every 3 X 3 subblock row and diagonal sum equal to 0 3 5 6 or 7 and every 3 X 3 column and antidiagonal sum not equal to 0 3 5 6 or 7.
Terms
- a(0) =1966a(1) =771a(2) =663a(3) =744a(4) =916a(5) =1097a(6) =1361a(7) =1791a(8) =2270a(9) =2976a(10) =4082a(11) =5341a(12) =7204a(13) =10080a(14) =13381a(15) =18273a(16) =25783a(17) =34430a(18) =47252a(19) =66894a(20) =89537a(21) =123120a(22) =174524a(23) =233809a(24) =321745a(25) =456303a(26) =611518a(27) =841752a(28) =1194010a(29) =1600373
External references
- oeis: A252380