A340197 - cp's OEIS frontend

A340197 a(1) = 1; for n > 1, a(n) = Sum_{d|n, dA318833(n/d)-1) * A340197(d).

n	a(n)
1	1
2	0
3	0
4	2
5	0
6	7
7	0
8	6
9	6
10	13
11	0
12	13
13	0
14	19
15	22
16	18
17	0
18	19
19	0
20	23
21	32
22	31
23	0
24	53
25	20
26	37
27	24
28	33
29	0
30	21
31	0
32	54
33	52
34	49
35	58
36	110
37	0
38	55
39	62
40	95
41	0
42	29
43	0
44	53
45	52
46	67
47	0
48	185
49	42
50	53
51	82
52	63
53	0
54	139
55	94
56	137
57	92
58	85
59	0
60	321
61	0
62	91
63	74
64	162
65	112
66	45
67	0
68	83
69	112
70	45
71	0
72	403
73	0
74	109
75	82
76	93
77	136
78	53
79	0
80	331
81	114
82	121

[1, 0, 0, 2, 0, 7, 0, 6, 6, 13, 0, 13, 0, 19, 22, 18, 0, 19, 0, 23, 32, 31, 0, 53, 20, 37, 24, 33, 0, 21, 0, 54, 52, 49, 58, 110, 0, 55, 62, 95, 0, 29, 0, 53, 52, 67, 0, 185, 42, 53, 82, 63, 0, 139, 94, 137, 92, 85, 0, 321, 0, 91, 74, 162, 112, 45, 0, 83, 112, 45, 0, 403, 0, 109, 82, 93, 136, 53, 0, 331, 114, 121]

cp's OEIS Frontend

A340197 a(1) = 1; for n > 1, a(n) = Sum_{d|n, dA318833(n/d)-1) * A340197(d).

Table of values

List of values

n	a(n)
1	1
2	0
3	0
4	2
5	0
6	7
7	0
8	6
9	6
10	13
11	0
12	13
13	0
14	19
15	22
16	18
17	0
18	19
19	0
20	23
21	32
22	31
23	0
24	53
25	20
26	37
27	24
28	33
29	0
30	21
31	0
32	54
33	52
34	49
35	58
36	110
37	0
38	55
39	62
40	95
41	0
42	29
43	0
44	53
45	52
46	67
47	0
48	185
49	42
50	53
51	82
52	63
53	0
54	139
55	94
56	137
57	92
58	85
59	0
60	321
61	0
62	91
63	74
64	162
65	112
66	45
67	0
68	83
69	112
70	45
71	0
72	403
73	0
74	109
75	82
76	93
77	136
78	53
79	0
80	331
81	114
82	121

n	a(n)
1	1
2	0
3	0
4	2
5	0
6	7
7	0
8	6
9	6
10	13
11	0
12	13
13	0
14	19
15	22
16	18
17	0
18	19
19	0
20	23
21	32
22	31
23	0
24	53
25	20
26	37
27	24
28	33
29	0
30	21
31	0
32	54
33	52
34	49
35	58
36	110
37	0
38	55
39	62
40	95
41	0
42	29
43	0
44	53
45	52
46	67
47	0
48	185
49	42
50	53
51	82
52	63
53	0
54	139
55	94
56	137
57	92
58	85
59	0
60	321
61	0
62	91
63	74
64	162
65	112
66	45
67	0
68	83
69	112
70	45
71	0
72	403
73	0
74	109
75	82
76	93
77	136
78	53
79	0
80	331
81	114
82	121

n	a(n)
1	1
2	0
3	0
4	2
5	0
6	7
7	0
8	6
9	6
10	13
11	0
12	13
13	0
14	19
15	22
16	18
17	0
18	19
19	0
20	23
21	32
22	31
23	0
24	53
25	20
26	37
27	24
28	33
29	0
30	21
31	0
32	54
33	52
34	49
35	58
36	110
37	0
38	55
39	62
40	95
41	0
42	29
43	0
44	53
45	52
46	67
47	0
48	185
49	42
50	53
51	82
52	63
53	0
54	139
55	94
56	137
57	92
58	85
59	0
60	321
61	0
62	91
63	74
64	162
65	112
66	45
67	0
68	83
69	112
70	45
71	0
72	403
73	0
74	109
75	82
76	93
77	136
78	53
79	0
80	331
81	114
82	121