A345471 - cp's OEIS frontend

A345471 a(0) = a(1) = 1, a(n) is the smallest positive integer m >= a(n-1) + a(n-2) such that gcd(a(k),m) = 1 for all 1 < k <= n - 1.

n	a(n)
0	1
1	1
2	2
3	3
4	5
5	11
6	17
7	29
8	47
9	79
10	127
11	211
12	343
13	557
14	907
15	1469
16	2377
17	3847
18	6229
19	10079
20	16319
21	26399
22	42719
23	69119
24	111841
25	180967
26	292811
27	473779
28	766607
29	1240387
30	2006999
31	3247393
32	5254397
33	8501791
34	13756189
35	22258001
36	36014191
37	58272197
38	94286389
39	152558587

[1, 1, 2, 3, 5, 11, 17, 29, 47, 79, 127, 211, 343, 557, 907, 1469, 2377, 3847, 6229, 10079, 16319, 26399, 42719, 69119, 111841, 180967, 292811, 473779, 766607, 1240387, 2006999, 3247393, 5254397, 8501791, 13756189, 22258001, 36014191, 58272197, 94286389, 152558587]

cp's OEIS Frontend

A345471 a(0) = a(1) = 1, a(n) is the smallest positive integer m >= a(n-1) + a(n-2) such that gcd(a(k),m) = 1 for all 1 < k <= n - 1.

Table of values

List of values