A326401 - cp's OEIS frontend

A326401 Expansion of Sum_{k>=1} k * x^k / (1 + x^k + x^(2*k)).

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

[1, 1, 3, 3, 4, 3, 8, 5, 9, 4, 10, 9, 14, 8, 12, 11, 16, 9, 20, 12, 24, 10, 22, 15, 21, 14, 27, 24, 28, 12, 32, 21, 30, 16, 32, 27, 38, 20, 42, 20, 40, 24, 44, 30, 36, 22, 46, 33, 57, 21, 48, 42, 52, 27, 40, 40, 60, 28, 58, 36, 62, 32, 72, 43, 56, 30, 68, 48, 66, 32]

cp's OEIS Frontend

A326401 Expansion of Sum_{k>=1} k * x^k / (1 + x^k + x^(2*k)).

Table of values

List of values

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

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

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