Number of (n+2) X (7+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.
A252383
Number of (n+2) X (7+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) =7109a(1) =1928a(2) =1610a(3) =1880a(4) =2310a(5) =2769a(6) =3495a(7) =4601a(8) =5840a(9) =7723a(10) =10599a(11) =13880a(12) =18792a(13) =26302a(14) =34929a(15) =47771a(16) =67413a(17) =90036a(18) =123639a(19) =175043a(20) =234308a(21) =322264a(22) =456822a(23) =612017a(24) =842271a(25) =1194529a(26) =1600872a(27) =2203667a(28) =3125871a(29) =4189728
External references
- oeis: A252383