Number of (n+2)X(5+2) 0..1 arrays with every 3X3 subblock sum of the two medians of the central row and column plus the two sums of the diagonal and antidiagonal nondecreasing horizontally and vertically.
A256901
Number of (n+2)X(5+2) 0..1 arrays with every 3X3 subblock sum of the two medians of the central row and column plus the two sums of the diagonal and antidiagonal nondecreasing horizontally and vertically.
Terms
- a(0) =113474a(1) =396712a(2) =1948416a(3) =4687873a(4) =7212370a(5) =12286621a(6) =12230530a(7) =19377777a(8) =24869452a(9) =35469812a(10) =54180018a(11) =82633412a(12) =128108016a(13) =197244059a(14) =304897422a(15) =470254289a(16) =720831904a(17) =1099014235a(18) =1665081428a(19) =2507744625a(20) =3746976448
External references
- oeis: A256901