A177051 - cp's OEIS frontend

A177051 A subsequence of the Fibonacci sequence such that a(n) is a quadratic residue mod a(n+1).

n	a(n)
1	1
2	2
3	34
4	55
5	89
6	233
7	377
8	1597
9	17711
10	28657
11	121393
12	317811
13	1346269
14	3524578
15	5702887
16	24157817
17	39088169
18	63245986
19	433494437
20	2971215073
21	53316291173
22	591286729879
23	956722026041
24	2504730781961
25	4052739537881
26	17167680177565
27	308061521170129
28	5527939700884757
29	61305790721611591
30	99194853094755497
31	1779979416004714189

[1, 2, 34, 55, 89, 233, 377, 1597, 17711, 28657, 121393, 317811, 1346269, 3524578, 5702887, 24157817, 39088169, 63245986, 433494437, 2971215073, 53316291173, 591286729879, 956722026041, 2504730781961, 4052739537881, 17167680177565, 308061521170129, 5527939700884757, 61305790721611591, 99194853094755497, 1779979416004714189]

cp's OEIS Frontend

A177051 A subsequence of the Fibonacci sequence such that a(n) is a quadratic residue mod a(n+1).

Table of values

List of values