A071343 - cp's OEIS frontend

A071343 a(n) = least positive r <= n, such that the origin-centered sphere of radius sqrt(r) touches A071342(n) lattice points.

n	a(n)
1	1
2	2
3	9
4	14
5	14
6	26
7	41
8	41
9	74
10	89
11	101
12	101
13	146
14	194
15	194
16	194
17	269
18	314
19	341
20	341
21	341
22	446
23	446
24	446
25	614
26	626
27	689
28	689
29	794
30	854
31	941
32	941
33	941
34	1154
35	1154
36	1286
37	1361
38	1361
39	1361
40	1361
41	1634
42	1634
43	1781
44	1889
45	1889
46	1889
47	2141
48	2141

[1, 2, 9, 14, 14, 26, 41, 41, 74, 89, 101, 101, 146, 194, 194, 194, 269, 314, 341, 341, 341, 446, 446, 446, 614, 626, 689, 689, 794, 854, 941, 941, 941, 1154, 1154, 1286, 1361, 1361, 1361, 1361, 1634, 1634, 1781, 1889, 1889, 1889, 2141, 2141]

cp's OEIS Frontend

A071343 a(n) = least positive r <= n, such that the origin-centered sphere of radius sqrt(r) touches A071342(n) lattice points.

Table of values

List of values