A326438 - cp's OEIS frontend

A326438 Number of subsets of {1..n} such that no two elements have the same sorted prime signature.

n	a(n)
0	1
1	2
2	4
3	6
4	12
5	16
6	32
7	40
8	80
9	120
10	180
11	216
12	432
13	504
14	672
15	840
16	1680
17	1920
18	2880
19	3240
20	4320
21	5184
22	6048
23	6720
24	13440
25	17920
26	20480
27	30720
28	38400
29	42240
30	84480
31	92160
32	184320
33	207360
34	230400
35	253440
36	506880
37	549120
38	599040
39	648960
40	973440

[1, 2, 4, 6, 12, 16, 32, 40, 80, 120, 180, 216, 432, 504, 672, 840, 1680, 1920, 2880, 3240, 4320, 5184, 6048, 6720, 13440, 17920, 20480, 30720, 38400, 42240, 84480, 92160, 184320, 207360, 230400, 253440, 506880, 549120, 599040, 648960, 973440]

cp's OEIS Frontend

A326438 Number of subsets of {1..n} such that no two elements have the same sorted prime signature.

Table of values

List of values