A070815 - cp's OEIS frontend

A070815 Solutions to phi(gpf(x)) - gpf(phi(x)) = 254 = c are special multiples of 257, x = 257k, where largest prime factors of factor k were observed from {2, 3, 5, 17}. See solutions to other even cases of c (=A070813): A007283 for 0, A070004 for 2, A070814 for 14, A070816 for 65534.

n	a(n)
1	257
2	514
3	771
4	1028
5	1285
6	1542
7	2056
8	2570
9	3084
10	3855
11	4112
12	4369
13	5140
14	6168
15	7710
16	8224
17	8738
18	10280
19	12336
20	13107
21	15420
22	16448
23	17476
24	20560
25	21845
26	24672
27	26214
28	30840
29	32896
30	34952
31	41120
32	43690
33	49344
34	52428
35	61680
36	65535
37	65792

[257, 514, 771, 1028, 1285, 1542, 2056, 2570, 3084, 3855, 4112, 4369, 5140, 6168, 7710, 8224, 8738, 10280, 12336, 13107, 15420, 16448, 17476, 20560, 21845, 24672, 26214, 30840, 32896, 34952, 41120, 43690, 49344, 52428, 61680, 65535, 65792]

cp's OEIS Frontend

A070815 Solutions to phi(gpf(x)) - gpf(phi(x)) = 254 = c are special multiples of 257, x = 257k, where largest prime factors of factor k were observed from {2, 3, 5, 17}. See solutions to other even cases of c (=A070813): A007283 for 0, A070004 for 2, A070814 for 14, A070816 for 65534.

Table of values

List of values