A347891 - cp's OEIS frontend

A347891 Odd numbers k such that sigma(k^2) > 2*k^2 and A003415(sigma(k^2)) < k^2.

n	a(n)
1	495
2	735
3	945
4	1485
5	1755
6	2205
7	2475
8	2625
9	2805
10	3315
11	3675
12	3795
13	4455
14	4785
15	4845
16	5145
17	5265
18	5445
19	6615
20	6765
21	7425
22	7605
23	7755
24	8085
25	8415
26	8505
27	8745
28	8775
29	9735
30	11025
31	12375
32	12495
33	13365
34	13965
35	14025
36	15435
37	15795
38	16065
39	16335
40	16905
41	17595
42	18375
43	19845
44	20295
45	21315
46	22185
47	22275
48	22785
49	22815
50	23265

[495, 735, 945, 1485, 1755, 2205, 2475, 2625, 2805, 3315, 3675, 3795, 4455, 4785, 4845, 5145, 5265, 5445, 6615, 6765, 7425, 7605, 7755, 8085, 8415, 8505, 8745, 8775, 9735, 11025, 12375, 12495, 13365, 13965, 14025, 15435, 15795, 16065, 16335, 16905, 17595, 18375, 19845, 20295, 21315, 22185, 22275, 22785, 22815, 23265]

cp's OEIS Frontend

A347891 Odd numbers k such that sigma(k^2) > 2*k^2 and A003415(sigma(k^2)) < k^2.

Table of values

List of values