A257105 - cp's OEIS frontend

A257105 Composite numbers n such that n'=(n+8)', where n' is the arithmetic derivative of n.

n	a(n)
1	132
2	476
3	2108
4	16748
5	27548
6	28676
7	99524
8	100076
9	239948
10	308228
11	344129
12	573476
13	601676
14	822908
15	860276
16	883268
17	1673228
18	3274010
19	4959476
20	7548956
21	8916044
22	9048428
23	9215348
24	9643169
25	9833588
26	10011908
27	14773676
28	17119436
29	18529964
30	19459028
31	21335948
32	21739148

[132, 476, 2108, 16748, 27548, 28676, 99524, 100076, 239948, 308228, 344129, 573476, 601676, 822908, 860276, 883268, 1673228, 3274010, 4959476, 7548956, 8916044, 9048428, 9215348, 9643169, 9833588, 10011908, 14773676, 17119436, 18529964, 19459028, 21335948, 21739148]

cp's OEIS Frontend

A257105 Composite numbers n such that n'=(n+8)', where n' is the arithmetic derivative of n.

Table of values

List of values