A115312 - cp's OEIS frontend

A115312 a(n) = gcd(Lucas(n)-1, Fibonacci(n)+1).

n	a(n)
1	2
2	2
3	3
4	2
5	2
6	1
7	14
8	2
9	5
10	2
11	18
12	1
13	26
14	2
15	47
16	2
17	34
18	1
19	246
20	2
21	89
22	2
23	322
24	1
25	466
26	2
27	843
28	2
29	610
30	1
31	4414
32	2
33	1597
34	2
35	5778
36	1
37	8362
38	2
39	15127
40	2
41	10946
42	1
43	79206
44	2
45	28657
46	2
47	103682
48	1
49	150050
50	2
51	271443
52	2
53	196418
54	1
55	1421294
56	2
57	514229
58	2
59	1860498
60	1

[2, 2, 3, 2, 2, 1, 14, 2, 5, 2, 18, 1, 26, 2, 47, 2, 34, 1, 246, 2, 89, 2, 322, 1, 466, 2, 843, 2, 610, 1, 4414, 2, 1597, 2, 5778, 1, 8362, 2, 15127, 2, 10946, 1, 79206, 2, 28657, 2, 103682, 1, 150050, 2, 271443, 2, 196418, 1, 1421294, 2, 514229, 2, 1860498, 1]

cp's OEIS Frontend

A115312 a(n) = gcd(Lucas(n)-1, Fibonacci(n)+1).

Table of values

List of values