A327562 - cp's OEIS frontend

A327562 a(0) = a(1) = 1; for n > 1, a(n) = (a(n-1) + a(n-2)) / gcd(a(n-1), a(n-2)) if a(n-1) and a(n-2) are not coprime, otherwise a(n) = a(n-1) + a(n-2) + 1.

n	a(n)
0	1
1	1
2	3
3	5
4	9
5	15
6	8
7	24
8	4
9	7
10	12
11	20
12	8
13	7
14	16
15	24
16	5
17	30
18	7
19	38
20	46
21	42
22	44
23	43
24	88
25	132
26	5
27	138
28	144
29	47
30	192
31	240
32	9
33	83
34	93
35	177
36	90
37	89
38	180
39	270
40	5
41	55
42	12
43	68
44	20
45	22
46	21
47	44
48	66
49	5
50	72
51	78
52	25
53	104
54	130
55	9
56	140
57	150
58	29
59	180
60	210
61	13
62	224
63	238
64	33
65	272
66	306

[1, 1, 3, 5, 9, 15, 8, 24, 4, 7, 12, 20, 8, 7, 16, 24, 5, 30, 7, 38, 46, 42, 44, 43, 88, 132, 5, 138, 144, 47, 192, 240, 9, 83, 93, 177, 90, 89, 180, 270, 5, 55, 12, 68, 20, 22, 21, 44, 66, 5, 72, 78, 25, 104, 130, 9, 140, 150, 29, 180, 210, 13, 224, 238, 33, 272, 306]

cp's OEIS Frontend

A327562 a(0) = a(1) = 1; for n > 1, a(n) = (a(n-1) + a(n-2)) / gcd(a(n-1), a(n-2)) if a(n-1) and a(n-2) are not coprime, otherwise a(n) = a(n-1) + a(n-2) + 1.

Table of values

List of values

n	a(n)
0	1
1	1
2	3
3	5
4	9
5	15
6	8
7	24
8	4
9	7
10	12
11	20
12	8
13	7
14	16
15	24
16	5
17	30
18	7
19	38
20	46
21	42
22	44
23	43
24	88
25	132
26	5
27	138
28	144
29	47
30	192
31	240
32	9
33	83
34	93
35	177
36	90
37	89
38	180
39	270
40	5
41	55
42	12
43	68
44	20
45	22
46	21
47	44
48	66
49	5
50	72
51	78
52	25
53	104
54	130
55	9
56	140
57	150
58	29
59	180
60	210
61	13
62	224
63	238
64	33
65	272
66	306

n	a(n)
0	1
1	1
2	3
3	5
4	9
5	15
6	8
7	24
8	4
9	7
10	12
11	20
12	8
13	7
14	16
15	24
16	5
17	30
18	7
19	38
20	46
21	42
22	44
23	43
24	88
25	132
26	5
27	138
28	144
29	47
30	192
31	240
32	9
33	83
34	93
35	177
36	90
37	89
38	180
39	270
40	5
41	55
42	12
43	68
44	20
45	22
46	21
47	44
48	66
49	5
50	72
51	78
52	25
53	104
54	130
55	9
56	140
57	150
58	29
59	180
60	210
61	13
62	224
63	238
64	33
65	272
66	306

n	a(n)
0	1
1	1
2	3
3	5
4	9
5	15
6	8
7	24
8	4
9	7
10	12
11	20
12	8
13	7
14	16
15	24
16	5
17	30
18	7
19	38
20	46
21	42
22	44
23	43
24	88
25	132
26	5
27	138
28	144
29	47
30	192
31	240
32	9
33	83
34	93
35	177
36	90
37	89
38	180
39	270
40	5
41	55
42	12
43	68
44	20
45	22
46	21
47	44
48	66
49	5
50	72
51	78
52	25
53	104
54	130
55	9
56	140
57	150
58	29
59	180
60	210
61	13
62	224
63	238
64	33
65	272
66	306