A158345 - cp's OEIS frontend

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.

n	a(n)
1	1
2	5
3	13
4	53
5	61
6	845
7	253
8	7509
9	16141
10	128045
11	4093
12	1785965
13	16381
14	23576285
15	55921333
16	274696789
17	262141
18	5338300157
19	1048573
20	63028146573
21	117924207421
22	995274180125
23	16777213
24	15265519672173
25	14283159085861

[1, 5, 13, 53, 61, 845, 253, 7509, 16141, 128045, 4093, 1785965, 16381, 23576285, 55921333, 274696789, 262141, 5338300157, 1048573, 63028146573, 117924207421, 995274180125, 16777213, 15265519672173, 14283159085861]

cp's OEIS Frontend

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.

Table of values

List of values