A085080 - cp's OEIS frontend

A085080 Smallest k such that n, k and n+k have the same prime signature (canonical form), or 0 if no such number exists.

n	a(n)
1	0
2	3
3	2
4	0
5	2
6	15
7	0
8	0
9	0
10	55
11	2
12	63
13	0
14	21
15	6
16	0
17	2
18	45
19	0
20	637
21	14
22	33
23	0
24	351
25	0
26	39
27	0
28	147
29	2
30	165
31	0
32	0
33	6
34	21
35	22
36	0
37	0
38	39
39	26
40	20237
41	2
42	231
43	0
44	325
45	18
46	39
47	0
48	4136875
49	0
50	18
51	6
52	423
53	0
54	135
55	10
56	1375
57	34
58	33
59	2
60	90
61	0
62	15
63	12
64	0
65	21
66	165
67	0
68	207
69	22
70	385
71	2

[0, 3, 2, 0, 2, 15, 0, 0, 0, 55, 2, 63, 0, 21, 6, 0, 2, 45, 0, 637, 14, 33, 0, 351, 0, 39, 0, 147, 2, 165, 0, 0, 6, 21, 22, 0, 0, 39, 26, 20237, 2, 231, 0, 325, 18, 39, 0, 4136875, 0, 18, 6, 423, 0, 135, 10, 1375, 34, 33, 2, 90, 0, 15, 12, 0, 21, 165, 0, 207, 22, 385, 2]

cp's OEIS Frontend

A085080 Smallest k such that n, k and n+k have the same prime signature (canonical form), or 0 if no such number exists.

Table of values

List of values