A169901 - cp's OEIS frontend

A169901 Earliest sequence such that (x+y) | a(xy) for all x>=1, y>=1.

n	a(n)
1	2
2	3
3	4
4	20
5	6
6	35
7	8
8	18
9	30
10	77
11	12
12	728
13	14
14	45
15	16
16	680
17	18
18	1881
19	20
20	252
21	110
22	299
23	24
24	3850
25	130
26	135
27	84
28	5104
29	30
30	75361
31	32
32	396
33	238
34	665
35	36
36	28860
37	38
38	273
39	80
40	82082
41	42
42	218569
43	44
44	360
45	2898
46	1175
47	48
48	193648
49	350
50	2295
51	260
52	25228
53	54
54	33495

[2, 3, 4, 20, 6, 35, 8, 18, 30, 77, 12, 728, 14, 45, 16, 680, 18, 1881, 20, 252, 110, 299, 24, 3850, 130, 135, 84, 5104, 30, 75361, 32, 396, 238, 665, 36, 28860, 38, 273, 80, 82082, 42, 218569, 44, 360, 2898, 1175, 48, 193648, 350, 2295, 260, 25228, 54, 33495]

cp's OEIS Frontend

A169901 Earliest sequence such that (x+y) | a(xy) for all x>=1, y>=1.

Table of values

List of values