A288654 - cp's OEIS frontend

A288654 a(n) = (sigma(n)-n-1)*(3-omega(n)).

n	a(n)
1	-3
2	0
3	0
4	4
5	0
6	5
7	0
8	12
9	6
10	7
11	0
12	15
13	0
14	9
15	8
16	28
17	0
18	20
19	0
20	21
21	10
22	13
23	0
24	35
25	10
26	15
27	24
28	27
29	0
30	0
31	0
32	60
33	14
34	19
35	12
36	54
37	0
38	21
39	16
40	49
41	0
42	0
43	0
44	39
45	32
46	25
47	0
48	75
49	14
50	42
51	20
52	45
53	0
54	65
55	16
56	63
57	22
58	31
59	0
60	0
61	0
62	33
63	40
64	124
65	18
66	0
67	0
68	57
69	26
70	0
71	0
72	122

[-3, 0, 0, 4, 0, 5, 0, 12, 6, 7, 0, 15, 0, 9, 8, 28, 0, 20, 0, 21, 10, 13, 0, 35, 10, 15, 24, 27, 0, 0, 0, 60, 14, 19, 12, 54, 0, 21, 16, 49, 0, 0, 0, 39, 32, 25, 0, 75, 14, 42, 20, 45, 0, 65, 16, 63, 22, 31, 0, 0, 0, 33, 40, 124, 18, 0, 0, 57, 26, 0, 0, 122]

cp's OEIS Frontend

A288654 a(n) = (sigma(n)-n-1)*(3-omega(n)).

Table of values

List of values

n	a(n)
1	-3
2	0
3	0
4	4
5	0
6	5
7	0
8	12
9	6
10	7
11	0
12	15
13	0
14	9
15	8
16	28
17	0
18	20
19	0
20	21
21	10
22	13
23	0
24	35
25	10
26	15
27	24
28	27
29	0
30	0
31	0
32	60
33	14
34	19
35	12
36	54
37	0
38	21
39	16
40	49
41	0
42	0
43	0
44	39
45	32
46	25
47	0
48	75
49	14
50	42
51	20
52	45
53	0
54	65
55	16
56	63
57	22
58	31
59	0
60	0
61	0
62	33
63	40
64	124
65	18
66	0
67	0
68	57
69	26
70	0
71	0
72	122

n	a(n)
1	-3
2	0
3	0
4	4
5	0
6	5
7	0
8	12
9	6
10	7
11	0
12	15
13	0
14	9
15	8
16	28
17	0
18	20
19	0
20	21
21	10
22	13
23	0
24	35
25	10
26	15
27	24
28	27
29	0
30	0
31	0
32	60
33	14
34	19
35	12
36	54
37	0
38	21
39	16
40	49
41	0
42	0
43	0
44	39
45	32
46	25
47	0
48	75
49	14
50	42
51	20
52	45
53	0
54	65
55	16
56	63
57	22
58	31
59	0
60	0
61	0
62	33
63	40
64	124
65	18
66	0
67	0
68	57
69	26
70	0
71	0
72	122

n	a(n)
1	-3
2	0
3	0
4	4
5	0
6	5
7	0
8	12
9	6
10	7
11	0
12	15
13	0
14	9
15	8
16	28
17	0
18	20
19	0
20	21
21	10
22	13
23	0
24	35
25	10
26	15
27	24
28	27
29	0
30	0
31	0
32	60
33	14
34	19
35	12
36	54
37	0
38	21
39	16
40	49
41	0
42	0
43	0
44	39
45	32
46	25
47	0
48	75
49	14
50	42
51	20
52	45
53	0
54	65
55	16
56	63
57	22
58	31
59	0
60	0
61	0
62	33
63	40
64	124
65	18
66	0
67	0
68	57
69	26
70	0
71	0
72	122