A102708 - cp's OEIS frontend

A102708 Composite numbers a(n) having a GCD with Pell_x(a(n))-1 equal to 1 (where Pell_x(n) is the x solution of the Pell-Fermat equation: x^2 - n y^2 = 1). There is no square in the sequence because the Pell-Fermat equation has no solution for them.

n	a(n)
0	27
1	51
2	65
3	85
4	123
5	125
6	145
7	171
8	185
9	187
10	243
11	265
12	267
13	291
14	325
15	339
16	363
17	365
18	387
19	411
20	425
21	445
22	451
23	459
24	481
25	485
26	493
27	531
28	533
29	565
30	603
31	627
32	629
33	685
34	697
35	699
36	731
37	771
38	779
39	785
40	803
41	843
42	845
43	865
44	867
45	901
46	925
47	949
48	963
49	965
50	985
51	1003

[27, 51, 65, 85, 123, 125, 145, 171, 185, 187, 243, 265, 267, 291, 325, 339, 363, 365, 387, 411, 425, 445, 451, 459, 481, 485, 493, 531, 533, 565, 603, 627, 629, 685, 697, 699, 731, 771, 779, 785, 803, 843, 845, 865, 867, 901, 925, 949, 963, 965, 985, 1003]

cp's OEIS Frontend

A102708 Composite numbers a(n) having a GCD with Pell_x(a(n))-1 equal to 1 (where Pell_x(n) is the x solution of the Pell-Fermat equation: x^2 - n y^2 = 1). There is no square in the sequence because the Pell-Fermat equation has no solution for them.

Table of values

List of values