A332444 - cp's OEIS frontend

A332444 Numbers k that are squares or twice-squares, but for which A087808(sigma(k)) is even.

n	a(n)
1	2
2	8
3	32
4	36
5	72
6	98
7	128
8	144
9	162
10	196
11	225
12	242
13	288
14	289
15	324
16	484
17	512
18	576
19	882
20	968
21	1058
22	1152
23	1444
24	1458
25	1521
26	1681
27	1764
28	1922
29	1936
30	2048
31	2178
32	2304
33	2500
34	2809
35	2888
36	2916
37	3025
38	3528
39	3698
40	3872
41	4418
42	4608
43	4802
44	5000
45	5329
46	5776
47	5832
48	6498
49	7056
50	7396
51	7569
52	7688
53	7744
54	7921
55	7938
56	8192
57	8281

[2, 8, 32, 36, 72, 98, 128, 144, 162, 196, 225, 242, 288, 289, 324, 484, 512, 576, 882, 968, 1058, 1152, 1444, 1458, 1521, 1681, 1764, 1922, 1936, 2048, 2178, 2304, 2500, 2809, 2888, 2916, 3025, 3528, 3698, 3872, 4418, 4608, 4802, 5000, 5329, 5776, 5832, 6498, 7056, 7396, 7569, 7688, 7744, 7921, 7938, 8192, 8281]

cp's OEIS Frontend

A332444 Numbers k that are squares or twice-squares, but for which A087808(sigma(k)) is even.

Table of values

List of values