A066294 - cp's OEIS frontend

A066294 a(n) = A000203(n)^2 - A001157(n) - 2n = sigma(n)^2 - sigma_2(n) - 2n.

n	a(n)
1	-2
2	0
3	0
4	20
5	0
6	82
7	0
8	124
9	60
10	174
11	0
12	550
13	0
14	298
15	286
16	588
17	0
18	1030
19	0
20	1178
21	482
22	642
23	0
24	2702
25	260
26	862
27	726
28	2030
29	0
30	3824
31	0
32	2540
33	1018
34	1398
35	934
36	6298
37	0
38	1714
39	1358
40	5810
41	0
42	6632
43	0
44	4406
45	3628
46	2442
47	0
48	11870
49	700
50	5294
51	2182
52	5930
53	0
54	10192
55	1902
56	10038
57	2666
58	3774
59	0
60	22644
61	0
62	4282
63	6140
64	10540
65	2506

[-2, 0, 0, 20, 0, 82, 0, 124, 60, 174, 0, 550, 0, 298, 286, 588, 0, 1030, 0, 1178, 482, 642, 0, 2702, 260, 862, 726, 2030, 0, 3824, 0, 2540, 1018, 1398, 934, 6298, 0, 1714, 1358, 5810, 0, 6632, 0, 4406, 3628, 2442, 0, 11870, 700, 5294, 2182, 5930, 0, 10192, 1902, 10038, 2666, 3774, 0, 22644, 0, 4282, 6140, 10540, 2506]

cp's OEIS Frontend

A066294 a(n) = A000203(n)^2 - A001157(n) - 2n = sigma(n)^2 - sigma_2(n) - 2n.

Table of values

List of values