A326490 - cp's OEIS frontend

A326490 Number of subsets of {1..n} containing no differences or quotients of pairs of distinct elements.

n	a(n)
0	1
1	2
2	3
3	5
4	7
5	12
6	18
7	31
8	46
9	72
10	102
11	172
12	259
13	428
14	607
15	989
16	1329
17	2142
18	3117
19	4953
20	6956
21	11032
22	15321
23	23979
24	33380
25	48699
26	66849
27	104853
28	144712
29	220758
30	304133
31	461580
32	636556
33	973843
34	1316513
35	1958828
36	2585433
37	3882843
38	5237093
39	7884277
40	10555739
41	15729293

[1, 2, 3, 5, 7, 12, 18, 31, 46, 72, 102, 172, 259, 428, 607, 989, 1329, 2142, 3117, 4953, 6956, 11032, 15321, 23979, 33380, 48699, 66849, 104853, 144712, 220758, 304133, 461580, 636556, 973843, 1316513, 1958828, 2585433, 3882843, 5237093, 7884277, 10555739, 15729293]

cp's OEIS Frontend

A326490 Number of subsets of {1..n} containing no differences or quotients of pairs of distinct elements.

Table of values

List of values