Number of (n+2) X (5+2) 0..3 arrays with every 3 X 3 subblock row and diagonal sum equal to 0 2 3 6 or 7 and every 3 X 3 column and antidiagonal sum not equal to 0 2 3 6 or 7.
A252529
Number of (n+2) X (5+2) 0..3 arrays with every 3 X 3 subblock row and diagonal sum equal to 0 2 3 6 or 7 and every 3 X 3 column and antidiagonal sum not equal to 0 2 3 6 or 7.
Terms
- a(0) =778a(1) =706a(2) =1120a(3) =1592a(4) =4420a(5) =7136a(6) =10720a(7) =30752a(8) =49792a(9) =77696a(10) =227584a(11) =369152a(12) =589312a(13) =1746944a(14) =2836480a(15) =4585472a(16) =13680640a(17) =22224896a(18) =36167680a(19) =108265472a(20) =175931392a(21) =287277056a(22) =861405184a(23) =1399980032a(24) =2289958912a(25) =6872367104
External references
- oeis: A252529