A317648 - cp's OEIS frontend

A317648 a(1) = a(2) = 1; for n >= 3, a(n) = a(t(n)) + a(n-t(n)) where t = A004001.

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

[1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 7, 7, 7, 8, 8, 9, 9, 10, 11, 12, 12, 12, 12, 13, 14, 15, 15, 15, 15, 16, 16, 17, 17, 18, 19, 20, 21, 21, 21, 21, 21, 22, 23, 24, 25, 26, 27, 27, 27, 27, 27, 27, 27, 28, 29, 30, 31, 31, 31, 31, 31, 32, 32, 33, 33, 34, 35, 36, 37, 38, 38, 38, 38, 38, 38, 39, 40, 41, 42, 43, 44, 45]

cp's OEIS Frontend

A317648 a(1) = a(2) = 1; for n >= 3, a(n) = a(t(n)) + a(n-t(n)) where t = A004001.

Table of values

List of values

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

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

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