A369391 - cp's OEIS frontend

A369391 Number of nonempty subsets of {1..n} whose elements have a square average.

n	a(n)
1	1
2	1
3	1
4	2
5	4
6	10
7	20
8	26
9	31
10	35
11	41
12	63
13	143
14	399
15	1083
16	2554
17	5078
18	8596
19	12772
20	17222
21	21792
22	27126
23	36538
24	62530
25	146701
26	412191
27	1178071
28	3156949
29	7703823
30	16992539
31	33946851
32	61840501
33	103674983
34	161604395
35	236759149
36	330078718
37	446073360
38	606337592

[1, 1, 1, 2, 4, 10, 20, 26, 31, 35, 41, 63, 143, 399, 1083, 2554, 5078, 8596, 12772, 17222, 21792, 27126, 36538, 62530, 146701, 412191, 1178071, 3156949, 7703823, 16992539, 33946851, 61840501, 103674983, 161604395, 236759149, 330078718, 446073360, 606337592]

cp's OEIS Frontend

A369391 Number of nonempty subsets of {1..n} whose elements have a square average.

Table of values

List of values