A146363 - cp's OEIS frontend

A146363 a(n) = smallest prime p such that continued fraction of (1 + sqrt(p))/2 has period length n.

n	a(n)
1	5
2	2
3	17
4	7
5	41
6	19
7	89
8	31
9	73
10	43
11	541
12	103
13	421
14	179
15	193
16	191
17	521
18	139
19	241
20	151
21	337
22	491
23	433
24	271
25	929
26	211
27	409
28	487
29	673
30	379
31	937
32	463
33	601
34	331
35	769
36	1439
37	2297
38	619
39	1033
40	1399
41	1777
42	571
43	1753
44	823
45	1993
46	739
47	1249
48	631
49	4337
50	1051
51	1321
52	751
53	1201

[5, 2, 17, 7, 41, 19, 89, 31, 73, 43, 541, 103, 421, 179, 193, 191, 521, 139, 241, 151, 337, 491, 433, 271, 929, 211, 409, 487, 673, 379, 937, 463, 601, 331, 769, 1439, 2297, 619, 1033, 1399, 1777, 571, 1753, 823, 1993, 739, 1249, 631, 4337, 1051, 1321, 751, 1201]

cp's OEIS Frontend

A146363 a(n) = smallest prime p such that continued fraction of (1 + sqrt(p))/2 has period length n.

Table of values

List of values