Number of (n+2) X (5+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.
A252381
Number of (n+2) X (5+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) =3020a(1) =1067a(2) =963a(3) =1091a(4) =1305a(5) =1667a(6) =2031a(7) =2598a(8) =3526a(9) =4492a(10) =5983a(11) =8393a(12) =10935a(13) =14845a(14) =21135a(15) =27803a(16) =38046a(17) =54494a(18) =71964a(19) =98787a(20) =141829a(21) =187579a(22) =257809a(23) =370475a(24) =490263a(25) =674134a(26) =969078a(27) =1282700a(28) =1764087a(29) =2536241
External references
- oeis: A252381