A355898 - cp's OEIS frontend

A355898 a(1) = a(2) = 1; a(n) = gcd(a(n-1), a(n-2)) + (a(n-1) + a(n-2))/gcd(a(n-1), a(n-2)).

n	a(n)
1	1
2	1
3	3
4	5
5	9
6	15
7	11
8	27
9	39
10	25
11	65
12	23
13	89
14	113
15	203
16	317
17	521
18	839
19	1361
20	2201
21	3563
22	5765
23	9329
24	15095
25	24425
26	7909
27	32335
28	40245
29	14521
30	54767
31	69289
32	124057
33	193347
34	317405
35	46443
36	363849
37	136767
38	166875
39	101217
40	89367
41	63531
42	50969
43	114501
44	165471
45	93327
46	86269
47	179597
48	265867
49	445465
50	711333

[1, 1, 3, 5, 9, 15, 11, 27, 39, 25, 65, 23, 89, 113, 203, 317, 521, 839, 1361, 2201, 3563, 5765, 9329, 15095, 24425, 7909, 32335, 40245, 14521, 54767, 69289, 124057, 193347, 317405, 46443, 363849, 136767, 166875, 101217, 89367, 63531, 50969, 114501, 165471, 93327, 86269, 179597, 265867, 445465, 711333]

cp's OEIS Frontend

A355898 a(1) = a(2) = 1; a(n) = gcd(a(n-1), a(n-2)) + (a(n-1) + a(n-2))/gcd(a(n-1), a(n-2)).

Table of values

List of values