A031416 - cp's OEIS frontend

A031416 Numbers k such that the continued fraction for sqrt(k) has odd period and if the last term of the periodic part is deleted then there are a pair of central terms both equal to 3.

n	a(n)
1	89
2	149
3	193
4	218
5	250
6	277
7	337
8	493
9	521
10	569
11	653
12	709
13	914
14	1009
15	1018
16	1037
17	1385
18	1465
19	1553
20	1597
21	1618
22	1754
23	1781
24	1898
25	1921
26	1973
27	1994
28	2069
29	2129
30	2146
31	2293
32	2378
33	2389
34	2441
35	2474
36	2561
37	2725
38	2741
39	2777
40	2897
41	2957
42	2986
43	3170
44	3229
45	3265

[89, 149, 193, 218, 250, 277, 337, 493, 521, 569, 653, 709, 914, 1009, 1018, 1037, 1385, 1465, 1553, 1597, 1618, 1754, 1781, 1898, 1921, 1973, 1994, 2069, 2129, 2146, 2293, 2378, 2389, 2441, 2474, 2561, 2725, 2741, 2777, 2897, 2957, 2986, 3170, 3229, 3265]

cp's OEIS Frontend

A031416 Numbers k such that the continued fraction for sqrt(k) has odd period and if the last term of the periodic part is deleted then there are a pair of central terms both equal to 3.

Table of values

List of values