A140972 - cp's OEIS frontend

A140972 Numbers k such that arithmetic mean of squares of first k Lucas numbers is an integer.

n	a(n)
1	1
2	10
3	12
4	24
5	36
6	48
7	60
8	72
9	96
10	108
11	120
12	144
13	168
14	180
15	192
16	216
17	240
18	250
19	288
20	300
21	324
22	336
23	360
24	384
25	432
26	442
27	480
28	504
29	540
30	550
31	552
32	576
33	600
34	612
35	624
36	648
37	660
38	672
39	684
40	720
41	768
42	840
43	864
44	900
45	960
46	972
47	1008
48	1068
49	1080
50	1104
51	1152
52	1176
53	1200

[1, 10, 12, 24, 36, 48, 60, 72, 96, 108, 120, 144, 168, 180, 192, 216, 240, 250, 288, 300, 324, 336, 360, 384, 432, 442, 480, 504, 540, 550, 552, 576, 600, 612, 624, 648, 660, 672, 684, 720, 768, 840, 864, 900, 960, 972, 1008, 1068, 1080, 1104, 1152, 1176, 1200]

cp's OEIS Frontend

A140972 Numbers k such that arithmetic mean of squares of first k Lucas numbers is an integer.

Table of values

List of values