Number of (1+2)X(n+2) 0..3 arrays with every 3X3 subblock row and diagonal sum equal to 0 3 5 6 or 7 and every 3X3 column and antidiagonal sum not equal to 0 3 5 6 or 7.
A252385
Number of (1+2)X(n+2) 0..3 arrays with every 3X3 subblock row and diagonal sum equal to 0 3 5 6 or 7 and every 3X3 column and antidiagonal sum not equal to 0 3 5 6 or 7.
Terms
- a(0) =578a(1) =897a(2) =1359a(3) =1966a(4) =3020a(5) =4682a(6) =7109a(7) =10880a(8) =16510a(9) =24980a(10) =37998a(11) =57542a(12) =86746a(13) =131187a(14) =198166a(15) =297785a(16) =448707a(17) =675885a(18) =1013403a(19) =1523445a(20) =2289734a(21) =3427589a(22) =5145403a(23) =7722614a(24) =11548590a(25) =17320501a(26) =25972750a(27) =38820847a(28) =58190052a(29) =87213137
External references
- oeis: A252385