A196724 - cp's OEIS frontend

A196724 Number of subsets of {1..n} (including empty set) such that the pairwise products of distinct elements are all distinct.

n	a(n)
0	1
1	2
2	4
3	8
4	16
5	32
6	58
7	116
8	212
9	416
10	720
11	1440
12	2340
13	4680
14	7920
15	13024
16	23328
17	46656
18	74168
19	148336
20	229856
21	371424
22	615304
23	1230608
24	1780224
25	3401568
26	5589360
27	9468504
28	14397744
29	28795488
30	40312128
31	80624256
32	131388480
33	206363168
34	335814288
35	521401536

[1, 2, 4, 8, 16, 32, 58, 116, 212, 416, 720, 1440, 2340, 4680, 7920, 13024, 23328, 46656, 74168, 148336, 229856, 371424, 615304, 1230608, 1780224, 3401568, 5589360, 9468504, 14397744, 28795488, 40312128, 80624256, 131388480, 206363168, 335814288, 521401536]

cp's OEIS Frontend

A196724 Number of subsets of {1..n} (including empty set) such that the pairwise products of distinct elements are all distinct.

Table of values

List of values