A211222 - cp's OEIS frontend

A211222 Minimum integer m for which n·m = n'·m', where n' and m' are the arithmetic derivatives of n and m. Zero if m does not exist.

n	a(n)
2	16
3	64
4	4
5	1024
6	20
7	16384
8	9
9	8
10	1372
11	4194304
12	0
13	67108864
14	0
15	0
16	2
17	17179869184
18	77948684
19	274877906944
20	6
21	1000
22	42417997492
23	70368744177664
24	1771561
25	32
26	300
27	3125
28	0
29	288230376151711744
30	550618520345910837374536871905139185678862401
31	4611686018427387904

[16, 64, 4, 1024, 20, 16384, 9, 8, 1372, 4194304, 0, 67108864, 0, 0, 2, 17179869184, 77948684, 274877906944, 6, 1000, 42417997492, 70368744177664, 1771561, 32, 300, 3125, 0, 288230376151711744, 550618520345910837374536871905139185678862401, 4611686018427387904]

cp's OEIS Frontend

A211222 Minimum integer m for which n·m = n'·m', where n' and m' are the arithmetic derivatives of n and m. Zero if m does not exist.

Table of values

List of values