A069586 - cp's OEIS frontend

A069586 Smallest prime power p^k (k >= 2) such that there is a difference of exactly n between p^k and some other prime power q^m (m >= 2); or 0 if no such q^m exists.

n	a(n)
1	8
2	25
3	125
4	4
5	4
6	0
7	9
8	8
9	16
10	2187
11	16
12	4
13	243
14	0
15	49
16	9
17	8
18	9
19	8
20	0
21	4
22	27
23	4
24	8
25	0
26	0
27	0
28	4
29	0
30	6859
31	0
32	32
33	16
34	0
35	0
36	0
37	27
38	1331
39	25
40	9
41	8
42	0
43	0
44	81
45	4
46	243
47	81
48	16
49	32
50	0
51	0
52	0
53	0
54	27
55	9
56	8
57	64
58	0
59	0
60	4
61	64
62	0
63	961
64	64
65	16
66	0
67	0
68	0
69	0
70	0
71	0
72	9
73	8
74	169
75	0
76	49
77	4
78	0
79	49
80	0
81	0
82	0
83	0
84	0
85	0

[8, 25, 125, 4, 4, 0, 9, 8, 16, 2187, 16, 4, 243, 0, 49, 9, 8, 9, 8, 0, 4, 27, 4, 8, 0, 0, 0, 4, 0, 6859, 0, 32, 16, 0, 0, 0, 27, 1331, 25, 9, 8, 0, 0, 81, 4, 243, 81, 16, 32, 0, 0, 0, 0, 27, 9, 8, 64, 0, 0, 4, 64, 0, 961, 64, 16, 0, 0, 0, 0, 0, 0, 9, 8, 169, 0, 49, 4, 0, 49, 0, 0, 0, 0, 0, 0]

cp's OEIS Frontend

A069586 Smallest prime power p^k (k >= 2) such that there is a difference of exactly n between p^k and some other prime power q^m (m >= 2); or 0 if no such q^m exists.

Table of values

List of values