A102366 - cp's OEIS frontend

A102366 Number of subsets of {1,2,...,n} in which exactly half of the elements are less than or equal to sqrt(n).

n	a(n)
0	1
1	1
2	2
3	3
4	6
5	10
6	15
7	21
8	28
9	84
10	120
11	165
12	220
13	286
14	364
15	455
16	1820
17	2380
18	3060
19	3876
20	4845
21	5985
22	7315
23	8855
24	10626
25	53130
26	65780
27	80730
28	98280
29	118755
30	142506
31	169911
32	201376
33	237336
34	278256
35	324632
36	1947792
37	2324784
38	2760681
39	3262623
40	3838380
41	4496388

[1, 1, 2, 3, 6, 10, 15, 21, 28, 84, 120, 165, 220, 286, 364, 455, 1820, 2380, 3060, 3876, 4845, 5985, 7315, 8855, 10626, 53130, 65780, 80730, 98280, 118755, 142506, 169911, 201376, 237336, 278256, 324632, 1947792, 2324784, 2760681, 3262623, 3838380, 4496388]

cp's OEIS Frontend

A102366 Number of subsets of {1,2,...,n} in which exactly half of the elements are less than or equal to sqrt(n).

Table of values

List of values