A130839 - cp's OEIS frontend

A130839 Sequence related to factorizations and prime signatures: a(1) = 1; for n>1,a(n) = A108464(n) - 2*A050322(n).

n	a(n)
1	1
2	0
3	0
4	1
5	1
6	3
7	2
8	7
9	5
10	5
11	8
12	14
13	14
14	8
15	20
16	26
17	32
18	15
19	40
20	40
21	45
22	22
23	47
24	65
25	23
26	77
27	94
28	75
29	63
30	98
31	122
32	37
33	135
34	196
35	120
36	148
37	188
38	117
39	216
40	55
41	226
42	231
43	187
44	206
45	377
46	187
47	310
48	338
49	286
50	366
51	83
52	483
53	375
54	99
55	454
56	405
57	683
58	284
59	598

[1, 0, 0, 1, 1, 3, 2, 7, 5, 5, 8, 14, 14, 8, 20, 26, 32, 15, 40, 40, 45, 22, 47, 65, 23, 77, 94, 75, 63, 98, 122, 37, 135, 196, 120, 148, 188, 117, 216, 55, 226, 231, 187, 206, 377, 187, 310, 338, 286, 366, 83, 483, 375, 99, 454, 405, 683, 284, 598]

cp's OEIS Frontend

A130839 Sequence related to factorizations and prime signatures: a(1) = 1; for n>1,a(n) = A108464(n) - 2*A050322(n).

Table of values

List of values

n	a(n)
1	1
2	0
3	0
4	1
5	1
6	3
7	2
8	7
9	5
10	5
11	8
12	14
13	14
14	8
15	20
16	26
17	32
18	15
19	40
20	40
21	45
22	22
23	47
24	65
25	23
26	77
27	94
28	75
29	63
30	98
31	122
32	37
33	135
34	196
35	120
36	148
37	188
38	117
39	216
40	55
41	226
42	231
43	187
44	206
45	377
46	187
47	310
48	338
49	286
50	366
51	83
52	483
53	375
54	99
55	454
56	405
57	683
58	284
59	598

n	a(n)
1	1
2	0
3	0
4	1
5	1
6	3
7	2
8	7
9	5
10	5
11	8
12	14
13	14
14	8
15	20
16	26
17	32
18	15
19	40
20	40
21	45
22	22
23	47
24	65
25	23
26	77
27	94
28	75
29	63
30	98
31	122
32	37
33	135
34	196
35	120
36	148
37	188
38	117
39	216
40	55
41	226
42	231
43	187
44	206
45	377
46	187
47	310
48	338
49	286
50	366
51	83
52	483
53	375
54	99
55	454
56	405
57	683
58	284
59	598

n	a(n)
1	1
2	0
3	0
4	1
5	1
6	3
7	2
8	7
9	5
10	5
11	8
12	14
13	14
14	8
15	20
16	26
17	32
18	15
19	40
20	40
21	45
22	22
23	47
24	65
25	23
26	77
27	94
28	75
29	63
30	98
31	122
32	37
33	135
34	196
35	120
36	148
37	188
38	117
39	216
40	55
41	226
42	231
43	187
44	206
45	377
46	187
47	310
48	338
49	286
50	366
51	83
52	483
53	375
54	99
55	454
56	405
57	683
58	284
59	598