A071341 - cp's OEIS frontend

A071341 a(n) = greatest positive r <= n, such that the origin-centered circle of radius sqrt(r) touches A071339(n) lattice points.

n	a(n)
0	0
1	1
2	4
3	5
4	13
5	25
6	25
7	25
8	50
9	65
10	85
11	85
12	130
13	145
14	185
15	221
16	250
17	265
18	305
19	325
20	325
21	425
22	425
23	425
24	425
25	425
26	650
27	725
28	725
29	725
30	850
31	925
32	925
33	1025
34	1105
35	1105
36	1105
37	1105
38	1105
39	1105
40	1105
41	1625
42	1625
43	1625
44	1885
45	1885
46	1885
47	2125
48	2210

[0, 1, 4, 5, 13, 25, 25, 25, 50, 65, 85, 85, 130, 145, 185, 221, 250, 265, 305, 325, 325, 425, 425, 425, 425, 425, 650, 725, 725, 725, 850, 925, 925, 1025, 1105, 1105, 1105, 1105, 1105, 1105, 1105, 1625, 1625, 1625, 1885, 1885, 1885, 2125, 2210]

cp's OEIS Frontend

A071341 a(n) = greatest positive r <= n, such that the origin-centered circle of radius sqrt(r) touches A071339(n) lattice points.

Table of values

List of values