A169900 - cp's OEIS frontend

A169900 Earliest sequence such that xy | a(x+y) for all x>=1, y>=1.

n	a(n)
1	1
2	1
3	2
4	12
5	12
6	360
7	60
8	1680
9	2520
10	25200
11	2520
12	332640
13	27720
14	5045040
15	5405400
16	2882880
17	720720
18	220540320
19	12252240
20	4655851200
21	4888643760
22	5121436320
23	232792560
24	128501493120
25	26771144400
26	696049754400

[1, 1, 2, 12, 12, 360, 60, 1680, 2520, 25200, 2520, 332640, 27720, 5045040, 5405400, 2882880, 720720, 220540320, 12252240, 4655851200, 4888643760, 5121436320, 232792560, 128501493120, 26771144400, 696049754400]

cp's OEIS Frontend

A169900 Earliest sequence such that xy | a(x+y) for all x>=1, y>=1.

Table of values

List of values