The number of pairs of independent outcomes when rolling an n-sided die. Or in other words, the number of pairs of proper subsets A,B of a set S, such that #A/#S * #B/#S = #(A \intersect B)/#S.

A158345

The number of pairs of independent outcomes when rolling an n-sided die. Or in other words, the number of pairs of proper subsets A,B of a set S, such that #A/#S * #B/#S = #(A \intersect B)/#S.

Terms

    a(0) =1a(1) =5a(2) =13a(3) =53a(4) =61a(5) =845a(6) =253a(7) =7509a(8) =16141a(9) =128045a(10) =4093a(11) =1785965a(12) =16381a(13) =23576285a(14) =55921333a(15) =274696789a(16) =262141a(17) =5338300157a(18) =1048573a(19) =63028146573a(20) =117924207421a(21) =995274180125a(22) =16777213

External references