A309494 - cp's OEIS frontend

A309494 a(1) = a(2) = a(3) = a(5) = 1, a(4) = 2; a(n) = a(n-a(n-3)) + a(n-a(n-4)) for n > 5.

n	a(n)
1	1
2	1
3	1
4	2
5	1
6	2
7	3
8	5
9	8
10	8
11	7
12	5
13	2
14	5
15	13
16	12
17	18
18	3
19	5
20	6
21	4
22	23
23	21
24	9
25	5
26	2
27	5
28	26
29	14
30	31
31	3
32	5
33	6
34	4
35	36
36	34
37	9
38	5
39	2
40	5
41	39
42	14
43	44
44	3
45	5
46	6
47	4
48	49
49	47
50	9
51	5
52	2
53	5
54	52
55	14
56	57
57	3
58	5
59	6
60	4
61	62
62	60
63	9
64	5
65	2
66	5
67	65
68	14
69	70
70	3
71	5
72	6
73	4
74	75
75	73
76	9
77	5
78	2
79	5
80	78
81	14
82	83
83	3
84	5
85	6
86	4
87	88
88	86
89	9
90	5
91	2
92	5
93	91

[1, 1, 1, 2, 1, 2, 3, 5, 8, 8, 7, 5, 2, 5, 13, 12, 18, 3, 5, 6, 4, 23, 21, 9, 5, 2, 5, 26, 14, 31, 3, 5, 6, 4, 36, 34, 9, 5, 2, 5, 39, 14, 44, 3, 5, 6, 4, 49, 47, 9, 5, 2, 5, 52, 14, 57, 3, 5, 6, 4, 62, 60, 9, 5, 2, 5, 65, 14, 70, 3, 5, 6, 4, 75, 73, 9, 5, 2, 5, 78, 14, 83, 3, 5, 6, 4, 88, 86, 9, 5, 2, 5, 91]

cp's OEIS Frontend

A309494 a(1) = a(2) = a(3) = a(5) = 1, a(4) = 2; a(n) = a(n-a(n-3)) + a(n-a(n-4)) for n > 5.

Table of values

List of values

n	a(n)
1	1
2	1
3	1
4	2
5	1
6	2
7	3
8	5
9	8
10	8
11	7
12	5
13	2
14	5
15	13
16	12
17	18
18	3
19	5
20	6
21	4
22	23
23	21
24	9
25	5
26	2
27	5
28	26
29	14
30	31
31	3
32	5
33	6
34	4
35	36
36	34
37	9
38	5
39	2
40	5
41	39
42	14
43	44
44	3
45	5
46	6
47	4
48	49
49	47
50	9
51	5
52	2
53	5
54	52
55	14
56	57
57	3
58	5
59	6
60	4
61	62
62	60
63	9
64	5
65	2
66	5
67	65
68	14
69	70
70	3
71	5
72	6
73	4
74	75
75	73
76	9
77	5
78	2
79	5
80	78
81	14
82	83
83	3
84	5
85	6
86	4
87	88
88	86
89	9
90	5
91	2
92	5
93	91

n	a(n)
1	1
2	1
3	1
4	2
5	1
6	2
7	3
8	5
9	8
10	8
11	7
12	5
13	2
14	5
15	13
16	12
17	18
18	3
19	5
20	6
21	4
22	23
23	21
24	9
25	5
26	2
27	5
28	26
29	14
30	31
31	3
32	5
33	6
34	4
35	36
36	34
37	9
38	5
39	2
40	5
41	39
42	14
43	44
44	3
45	5
46	6
47	4
48	49
49	47
50	9
51	5
52	2
53	5
54	52
55	14
56	57
57	3
58	5
59	6
60	4
61	62
62	60
63	9
64	5
65	2
66	5
67	65
68	14
69	70
70	3
71	5
72	6
73	4
74	75
75	73
76	9
77	5
78	2
79	5
80	78
81	14
82	83
83	3
84	5
85	6
86	4
87	88
88	86
89	9
90	5
91	2
92	5
93	91

n	a(n)
1	1
2	1
3	1
4	2
5	1
6	2
7	3
8	5
9	8
10	8
11	7
12	5
13	2
14	5
15	13
16	12
17	18
18	3
19	5
20	6
21	4
22	23
23	21
24	9
25	5
26	2
27	5
28	26
29	14
30	31
31	3
32	5
33	6
34	4
35	36
36	34
37	9
38	5
39	2
40	5
41	39
42	14
43	44
44	3
45	5
46	6
47	4
48	49
49	47
50	9
51	5
52	2
53	5
54	52
55	14
56	57
57	3
58	5
59	6
60	4
61	62
62	60
63	9
64	5
65	2
66	5
67	65
68	14
69	70
70	3
71	5
72	6
73	4
74	75
75	73
76	9
77	5
78	2
79	5
80	78
81	14
82	83
83	3
84	5
85	6
86	4
87	88
88	86
89	9
90	5
91	2
92	5
93	91