A048093 - cp's OEIS frontend

A048093 Number of nonempty subsets of {1,2,...,n} in which exactly 1/2 of the elements are <= sqrt(n).

n	a(n)
1	0
2	1
3	2
4	5
5	9
6	14
7	20
8	27
9	83
10	119
11	164
12	219
13	285
14	363
15	454
16	1819
17	2379
18	3059
19	3875
20	4844
21	5984
22	7314
23	8854
24	10625
25	53129
26	65779
27	80729
28	98279
29	118754
30	142505
31	169910
32	201375
33	237335
34	278255
35	324631
36	1947791
37	2324783
38	2760680

[0, 1, 2, 5, 9, 14, 20, 27, 83, 119, 164, 219, 285, 363, 454, 1819, 2379, 3059, 3875, 4844, 5984, 7314, 8854, 10625, 53129, 65779, 80729, 98279, 118754, 142505, 169910, 201375, 237335, 278255, 324631, 1947791, 2324783, 2760680]

cp's OEIS Frontend

A048093 Number of nonempty subsets of {1,2,...,n} in which exactly 1/2 of the elements are <= sqrt(n).

Table of values

List of values