Square array T(n,k), n >= 0, k >= 2, read by antidiagonals, where T(n,k) is the number of permutations of {k 1's, k 2's, ..., k n's} with the property that j's are equally spaced for j=1..n and the interval of j+1 is less than or equal to the interval of j for j=1..n-1.
A332762
Square array T(n,k), n >= 0, k >= 2, read by antidiagonals, where T(n,k) is the number of permutations of {k 1's, k 2's, ..., k n's} with the property that j's are equally spaced for j=1..n and the interval of j+1 is less than or equal to the interval of j for j=1..n-1.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =5a(6) =1a(7) =1a(8) =4a(9) =33a(10) =1a(11) =1a(12) =4a(13) =18a(14) =329a(15) =1a(16) =1a(17) =4a(18) =16a(19) =124a(20) =3825a(21) =1a(22) =1a(23) =4a(24) =16a(25) =110a(26) =738a(27) =57293a(28) =1a(29) =1
External references
- oeis: A332762