A071346 - cp's OEIS frontend

A071346 a(n) = least positive r <= n, such that the origin-centered 4d-sphere of radius sqrt(r) touches A071345(n) lattice points.

n	a(n)
1	1
2	3
3	9
4	14
5	18
6	30
7	42
8	54
9	78
10	90
11	114
12	126
13	150
14	186
15	210
16	210
17	270
18	270
19	330
20	390
21	390
22	450
23	510
24	570
25	570
26	630
27	630
28	630
29	810
30	882
31	930
32	990
33	1050
34	1050
35	1170
36	1170
37	1350
38	1386
39	1470
40	1530
41	1650
42	1710
43	1710
44	1890
45	1890
46	1890
47	1890
48	2250
49	2310

[1, 3, 9, 14, 18, 30, 42, 54, 78, 90, 114, 126, 150, 186, 210, 210, 270, 270, 330, 390, 390, 450, 510, 570, 570, 630, 630, 630, 810, 882, 930, 990, 1050, 1050, 1170, 1170, 1350, 1386, 1470, 1530, 1650, 1710, 1710, 1890, 1890, 1890, 1890, 2250, 2310]

cp's OEIS Frontend

A071346 a(n) = least positive r <= n, such that the origin-centered 4d-sphere of radius sqrt(r) touches A071345(n) lattice points.

Table of values

List of values