Number of block permutations on an n-set which are uniform, i.e., corresponding blocks have same size.

A023998

Number of block permutations on an n-set which are uniform, i.e., corresponding blocks have same size.

Terms

    a(0) =1a(1) =1a(2) =3a(3) =16a(4) =131a(5) =1496a(6) =22482a(7) =426833a(8) =9934563a(9) =277006192a(10) =9085194458a(11) =345322038293

External references