A086551 - cp's OEIS frontend

A086551 a(n) = smallest k such that tau(k)= n*tau(k-1) where tau(k) = number of divisors of k, or 0 if no such number exists.

n	a(n)
1	3
2	2
3	12
4	24
5	48
6	60
7	192
8	168
9	180
10	240
11	5120
12	360
13	20480
14	2112
15	720
16	840
17	983040
18	1260
19	786432
20	3024
21	2880
22	15360
23	62914560
24	3360
25	22032
26	266240
27	6300
28	6720
29	13690208256
30	5040
31	22548578304
32	7560
33	156672
34	6881280
35	25920
36	10080

[3, 2, 12, 24, 48, 60, 192, 168, 180, 240, 5120, 360, 20480, 2112, 720, 840, 983040, 1260, 786432, 3024, 2880, 15360, 62914560, 3360, 22032, 266240, 6300, 6720, 13690208256, 5040, 22548578304, 7560, 156672, 6881280, 25920, 10080]

cp's OEIS Frontend

A086551 a(n) = smallest k such that tau(k)= n*tau(k-1) where tau(k) = number of divisors of k, or 0 if no such number exists.

Table of values

List of values