A309019 - cp's OEIS frontend

A309019 Expansion of x * Product_{k>=0} (1 + x^(2^k) + x^(2^(k+1)) + x^(2^(k+2))).

n	a(n)
0	0
1	1
2	1
3	2
4	1
5	4
6	2
7	4
8	1
9	7
10	4
11	7
12	2
13	10
14	4
15	7
16	1
17	12
18	7
19	12
20	4
21	18
22	7
23	13
24	2
25	19
26	10
27	16
28	4
29	21
30	7
31	12
32	1
33	20
34	12
35	20
36	7
37	31
38	12
39	23
40	4
41	34
42	18
43	29
44	7
45	38
46	13
47	22
48	2
49	34
50	19
51	31
52	10
53	45
54	16
55	30
56	4
57	41
58	21
59	32
60	7
61	40
62	12
63	20
64	1
65	33
66	20
67	33
68	12
69	52
70	20
71	39
72	7
73	58
74	31
75	50
76	12
77	66
78	23
79	39
80	4
81	61
82	34
83	56
84	18
85	81
86	29
87	54
88	7
89	74
90	38

[0, 1, 1, 2, 1, 4, 2, 4, 1, 7, 4, 7, 2, 10, 4, 7, 1, 12, 7, 12, 4, 18, 7, 13, 2, 19, 10, 16, 4, 21, 7, 12, 1, 20, 12, 20, 7, 31, 12, 23, 4, 34, 18, 29, 7, 38, 13, 22, 2, 34, 19, 31, 10, 45, 16, 30, 4, 41, 21, 32, 7, 40, 12, 20, 1, 33, 20, 33, 12, 52, 20, 39, 7, 58, 31, 50, 12, 66, 23, 39, 4, 61, 34, 56, 18, 81, 29, 54, 7, 74, 38]

cp's OEIS Frontend

A309019 Expansion of x * Product_{k>=0} (1 + x^(2^k) + x^(2^(k+1)) + x^(2^(k+2))).

Table of values

List of values

n	a(n)
0	0
1	1
2	1
3	2
4	1
5	4
6	2
7	4
8	1
9	7
10	4
11	7
12	2
13	10
14	4
15	7
16	1
17	12
18	7
19	12
20	4
21	18
22	7
23	13
24	2
25	19
26	10
27	16
28	4
29	21
30	7
31	12
32	1
33	20
34	12
35	20
36	7
37	31
38	12
39	23
40	4
41	34
42	18
43	29
44	7
45	38
46	13
47	22
48	2
49	34
50	19
51	31
52	10
53	45
54	16
55	30
56	4
57	41
58	21
59	32
60	7
61	40
62	12
63	20
64	1
65	33
66	20
67	33
68	12
69	52
70	20
71	39
72	7
73	58
74	31
75	50
76	12
77	66
78	23
79	39
80	4
81	61
82	34
83	56
84	18
85	81
86	29
87	54
88	7
89	74
90	38

n	a(n)
0	0
1	1
2	1
3	2
4	1
5	4
6	2
7	4
8	1
9	7
10	4
11	7
12	2
13	10
14	4
15	7
16	1
17	12
18	7
19	12
20	4
21	18
22	7
23	13
24	2
25	19
26	10
27	16
28	4
29	21
30	7
31	12
32	1
33	20
34	12
35	20
36	7
37	31
38	12
39	23
40	4
41	34
42	18
43	29
44	7
45	38
46	13
47	22
48	2
49	34
50	19
51	31
52	10
53	45
54	16
55	30
56	4
57	41
58	21
59	32
60	7
61	40
62	12
63	20
64	1
65	33
66	20
67	33
68	12
69	52
70	20
71	39
72	7
73	58
74	31
75	50
76	12
77	66
78	23
79	39
80	4
81	61
82	34
83	56
84	18
85	81
86	29
87	54
88	7
89	74
90	38

n	a(n)
0	0
1	1
2	1
3	2
4	1
5	4
6	2
7	4
8	1
9	7
10	4
11	7
12	2
13	10
14	4
15	7
16	1
17	12
18	7
19	12
20	4
21	18
22	7
23	13
24	2
25	19
26	10
27	16
28	4
29	21
30	7
31	12
32	1
33	20
34	12
35	20
36	7
37	31
38	12
39	23
40	4
41	34
42	18
43	29
44	7
45	38
46	13
47	22
48	2
49	34
50	19
51	31
52	10
53	45
54	16
55	30
56	4
57	41
58	21
59	32
60	7
61	40
62	12
63	20
64	1
65	33
66	20
67	33
68	12
69	52
70	20
71	39
72	7
73	58
74	31
75	50
76	12
77	66
78	23
79	39
80	4
81	61
82	34
83	56
84	18
85	81
86	29
87	54
88	7
89	74
90	38