Number of colored set partitions of [n] where (i mod d) identifies the color of i and d is the number of available colors such that within each block the frequency of all colors is equal.
A345400
Number of colored set partitions of [n] where (i mod d) identifies the color of i and d is the number of available colors such that within each block the frequency of all colors is equal.
Terms
- a(0) =1a(1) =1a(2) =3a(3) =6a(4) =19a(5) =53a(6) =225a(7) =878a(8) =4281a(9) =21212a(10) =117489a(11) =678571a(12) =4238024a(13) =27644438a(14) =191326221a(15) =1383029112a(16) =10490101937a(17) =82864869805a(18) =682358388107
External references
- oeis: A345400