A385531 - cp's OEIS frontend

A385531 Numbers x such that there exist three integers 0 and t>0 such that sigma(x)^2 = sigma(y)^2 = sigma(z)^2 = x^2 + y^2 + z^2 + t^2.

n	a(n)
1	4
2	6
3	28
4	45
5	48
6	60
7	156
8	204
9	208
10	360
11	496
12	1170
13	2016
14	2520
15	2925
16	3480
17	4796
18	5532
19	5733
20	7152
21	7605
22	8128
23	9680
24	11050
25	12402
26	15776
27	33468
28	36720
29	37064
30	38408
31	43584
32	50960
33	55216
34	63708
35	70364
36	83772
37	92280
38	106700
39	114840
40	116288
41	149400
42	163800
43	166617
44	167580

[4, 6, 28, 45, 48, 60, 156, 204, 208, 360, 496, 1170, 2016, 2520, 2925, 3480, 4796, 5532, 5733, 7152, 7605, 8128, 9680, 11050, 12402, 15776, 33468, 36720, 37064, 38408, 43584, 50960, 55216, 63708, 70364, 83772, 92280, 106700, 114840, 116288, 149400, 163800, 166617, 167580]

cp's OEIS Frontend

A385531 Numbers x such that there exist three integers 0 and t>0 such that sigma(x)^2 = sigma(y)^2 = sigma(z)^2 = x^2 + y^2 + z^2 + t^2.

Table of values

List of values