A115169 - cp's OEIS frontend

A115169 Integers b > 0 for which there exists a positive integer a <= b such that (a^2 + b^2)/(1 + ab) is an integer.

n	a(n)
1	1
2	8
3	27
4	30
5	64
6	112
7	125
8	216
9	240
10	343
11	418
12	512
13	729
14	1000
15	1020
16	1331
17	1560
18	1728
19	2133
20	2197
21	2744
22	3120
23	3375
24	4096
25	4913
26	5822
27	5832
28	6859
29	7770
30	8000
31	9261
32	10648
33	12167
34	13824
35	15625
36	16256
37	16800
38	17576
39	18957
40	19683

[1, 8, 27, 30, 64, 112, 125, 216, 240, 343, 418, 512, 729, 1000, 1020, 1331, 1560, 1728, 2133, 2197, 2744, 3120, 3375, 4096, 4913, 5822, 5832, 6859, 7770, 8000, 9261, 10648, 12167, 13824, 15625, 16256, 16800, 17576, 18957, 19683]

cp's OEIS Frontend

A115169 Integers b > 0 for which there exists a positive integer a <= b such that (a^2 + b^2)/(1 + ab) is an integer.

Table of values

List of values