A110090 - cp's OEIS frontend

A110090 Numerators of sequence of rationals defined by r(n) = n for n<=1 and for n>1: r(n) = (sum of denominators of r(n-1) and r(n-2))/(sum of numerators of r(n-1) and r(n-2)).

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

[0, 1, 2, 2, 1, 4, 4, 1, 6, 6, 1, 8, 8, 1, 10, 10, 1, 12, 12, 1, 14, 14, 1, 16, 16, 1, 18, 18, 1, 20, 20, 1, 22, 22, 1, 24, 24, 1, 26, 26, 1, 28, 28, 1, 30, 30, 1, 32, 32, 1, 34, 34, 1, 36, 36, 1, 38, 38, 1, 40, 40, 1, 42, 42, 1, 44, 44, 1, 46, 46, 1, 48, 48, 1, 50, 50, 1, 52, 52, 1, 54, 54]

cp's OEIS Frontend

A110090 Numerators of sequence of rationals defined by r(n) = n for n<=1 and for n>1: r(n) = (sum of denominators of r(n-1) and r(n-2))/(sum of numerators of r(n-1) and r(n-2)).

Table of values

List of values

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

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

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