Number of (n+2)X(3+2) 0..1 arrays with nondecreasing sum of every three consecutive values in every row and column.
A251189
Number of (n+2)X(3+2) 0..1 arrays with nondecreasing sum of every three consecutive values in every row and column.
Terms
- a(0) =5832a(1) =34992a(2) =209952a(3) =1259712a(4) =4665600a(5) =17280000a(6) =64000000a(7) =180000000a(8) =506250000a(9) =1423828125a(10) =3348843750a(11) =7876480500a(12) =18525482136a(13) =38423222208a(14) =79692609024a(15) =165288374272a(16) =312264916992a(17) =589934886912
External references
- oeis: A251189