A125853 - cp's OEIS frontend

A125853 Squared radii of circles centered at a grid point in a square lattice hitting exactly 4 points. Indices k such that A004018(k)=4.

n	a(n)
1	1
2	2
3	4
4	8
5	9
6	16
7	18
8	32
9	36
10	49
11	64
12	72
13	81
14	98
15	121
16	128
17	144
18	162
19	196
20	242
21	256
22	288
23	324
24	361
25	392
26	441
27	484
28	512
29	529
30	576
31	648
32	722
33	729
34	784
35	882
36	961
37	968
38	1024
39	1058
40	1089
41	1152
42	1296
43	1444
44	1458
45	1568
46	1764
47	1849
48	1922
49	1936
50	2048
51	2116
52	2178
53	2209

[1, 2, 4, 8, 9, 16, 18, 32, 36, 49, 64, 72, 81, 98, 121, 128, 144, 162, 196, 242, 256, 288, 324, 361, 392, 441, 484, 512, 529, 576, 648, 722, 729, 784, 882, 961, 968, 1024, 1058, 1089, 1152, 1296, 1444, 1458, 1568, 1764, 1849, 1922, 1936, 2048, 2116, 2178, 2209]

cp's OEIS Frontend

A125853 Squared radii of circles centered at a grid point in a square lattice hitting exactly 4 points. Indices k such that A004018(k)=4.

Table of values

List of values