A379983 - cp's OEIS frontend

A379983 Numbers k such that there exists a number 1 <= m <= k-1 and at least two different pairs (x,y), 1 <= x < y <= k-1 such that 1/x^2 - 1/y^2 = 1/m^2 - 1/k^2.

n	a(n)
1	385
2	425
3	432
4	450
5	504
6	585
7	616
8	630
9	665
10	693
11	728
12	770
13	792
14	800
15	810
16	850
17	864
18	900
19	910
20	935
21	952
22	1008
23	1015
24	1040
25	1155
26	1170
27	1197
28	1232
29	1260
30	1275
31	1287
32	1296
33	1320
34	1330
35	1350
36	1360
37	1365
38	1386
39	1456
40	1512
41	1540
42	1547
43	1584
44	1600
45	1620
46	1672
47	1680

[385, 425, 432, 450, 504, 585, 616, 630, 665, 693, 728, 770, 792, 800, 810, 850, 864, 900, 910, 935, 952, 1008, 1015, 1040, 1155, 1170, 1197, 1232, 1260, 1275, 1287, 1296, 1320, 1330, 1350, 1360, 1365, 1386, 1456, 1512, 1540, 1547, 1584, 1600, 1620, 1672, 1680]

cp's OEIS Frontend

A379983 Numbers k such that there exists a number 1 <= m <= k-1 and at least two different pairs (x,y), 1 <= x < y <= k-1 such that 1/x^2 - 1/y^2 = 1/m^2 - 1/k^2.

Table of values

List of values