A045970 - cp's OEIS frontend

A045970 a(1)=7; if n = Product p_i^e_i, n > 1, then a(n) = Product p_{i+4}^e_i.

n	a(n)
1	7
2	11
3	13
4	121
5	17
6	143
7	19
8	1331
9	169
10	187
11	23
12	1573
13	29
14	209
15	221
16	14641
17	31
18	1859
19	37
20	2057
21	247
22	253
23	41
24	17303
25	289
26	319
27	2197
28	2299
29	43
30	2431
31	47
32	161051
33	299
34	341
35	323
36	20449
37	53
38	407
39	377
40	22627
41	59
42	2717
43	61
44	2783
45	2873
46	451
47	67
48	190333
49	361
50	3179
51	403

[7, 11, 13, 121, 17, 143, 19, 1331, 169, 187, 23, 1573, 29, 209, 221, 14641, 31, 1859, 37, 2057, 247, 253, 41, 17303, 289, 319, 2197, 2299, 43, 2431, 47, 161051, 299, 341, 323, 20449, 53, 407, 377, 22627, 59, 2717, 61, 2783, 2873, 451, 67, 190333, 361, 3179, 403]

cp's OEIS Frontend

A045970 a(1)=7; if n = Product p_i^e_i, n > 1, then a(n) = Product p_{i+4}^e_i.

Table of values

List of values