A305442 - cp's OEIS frontend

A305442 Number of subsets of {1, 2, ..., n} such that the sum of the reciprocals is strictly less than 1.

n	a(n)
0	1
1	1
2	2
3	4
4	7
5	13
6	24
7	44
8	81
9	149
10	274
11	501
12	918
13	1686
14	3110
15	5724
16	10543
17	19435
18	35857
19	66198
20	122294
21	226135
22	418351
23	774372
24	1434089
25	2657205
26	4925796
27	9135403
28	16949546
29	31460330
30	58415177
31	108502732
32	201603881
33	374707879
34	696649896
35	1295562234
36	2410000999

[1, 1, 2, 4, 7, 13, 24, 44, 81, 149, 274, 501, 918, 1686, 3110, 5724, 10543, 19435, 35857, 66198, 122294, 226135, 418351, 774372, 1434089, 2657205, 4925796, 9135403, 16949546, 31460330, 58415177, 108502732, 201603881, 374707879, 696649896, 1295562234, 2410000999]

cp's OEIS Frontend

A305442 Number of subsets of {1, 2, ..., n} such that the sum of the reciprocals is strictly less than 1.

Table of values

List of values