A326575 - cp's OEIS frontend

A326575 Expansion of Sum_{k>=1} k * x^k * (1 + x^(2k)) / (1 + x^(2k) + x^(4*k)).

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

[1, 2, 3, 4, 4, 6, 8, 8, 9, 8, 10, 12, 14, 16, 12, 16, 16, 18, 20, 16, 24, 20, 22, 24, 21, 28, 27, 32, 28, 24, 32, 32, 30, 32, 32, 36, 38, 40, 42, 32, 40, 48, 44, 40, 36, 44, 46, 48, 57, 42, 48, 56, 52, 54, 40, 64, 60, 56, 58, 48, 62, 64, 72, 64, 56, 60]

cp's OEIS Frontend

A326575 Expansion of Sum_{k>=1} k * x^k * (1 + x^(2k)) / (1 + x^(2k) + x^(4*k)).

Table of values

List of values

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

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

cp's OEIS Frontend

A326575 Expansion of Sum_{k>=1} k * x^k * (1 + x^(2*k)) / (1 + x^(2*k) + x^(4*k)).

Table of values

List of values

A326575 Expansion of Sum_{k>=1} k * x^k * (1 + x^(2k)) / (1 + x^(2k) + x^(4*k)).

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