A080504 - cp's OEIS frontend

A080504 Triangle whose n-th row contains the least set (ordered lexicographically) of n distinct positive integers whose arithmetic and geometric means are both integers.

n	a(n)
1	1
2	1
3	9
4	1
5	2
6	108
7	1
8	2
9	5
10	1000
11	1
12	2
13	3
14	4
15	1012500
16	1
17	2
18	3
19	4
20	8
21	15552
22	1
23	2
24	3
25	4
26	5
27	6
28	25015118625000
29	1
30	2
31	3
32	4
33	5
34	6
35	11
36	17757684573750000
37	1
38	2
39	3
40	4
41	5
42	6
43	7
44	8
45	19699405917187500
46	1
47	2
48	3
49	4
50	5
51	6
52	7
53	8
54	14
55	295491088757812500
56	1
57	2
58	3
59	4
60	5
61	6
62	7

[1, 1, 9, 1, 2, 108, 1, 2, 5, 1000, 1, 2, 3, 4, 1012500, 1, 2, 3, 4, 8, 15552, 1, 2, 3, 4, 5, 6, 25015118625000, 1, 2, 3, 4, 5, 6, 11, 17757684573750000, 1, 2, 3, 4, 5, 6, 7, 8, 19699405917187500, 1, 2, 3, 4, 5, 6, 7, 8, 14, 295491088757812500, 1, 2, 3, 4, 5, 6, 7]

cp's OEIS Frontend

A080504 Triangle whose n-th row contains the least set (ordered lexicographically) of n distinct positive integers whose arithmetic and geometric means are both integers.

Table of values

List of values