A120356 - cp's OEIS frontend

A120356 Even refactorable numbers n such that the number r of odd divisors and the number s of even divisors are both even divisors of n and n is the first number for which the triple (r,s,t) occurs, where t is the number of divisors of n.

n	a(n)
1	12
2	24
3	80
4	180
5	240
6	360
7	480
8	720
9	896
10	1344
11	1440
12	1620
13	2688
14	3240
15	3360
16	4032
17	5040
18	6720
19	6912
20	8064
21	10080
22	13440
23	20160
24	20412
25	24300
26	25200
27	30000
28	30240
29	34560
30	40320
31	40824
32	48600
33	56320
34	56700
35	60000
36	60480
37	62208
38	67584
39	69120

[12, 24, 80, 180, 240, 360, 480, 720, 896, 1344, 1440, 1620, 2688, 3240, 3360, 4032, 5040, 6720, 6912, 8064, 10080, 13440, 20160, 20412, 24300, 25200, 30000, 30240, 34560, 40320, 40824, 48600, 56320, 56700, 60000, 60480, 62208, 67584, 69120]

cp's OEIS Frontend

A120356 Even refactorable numbers n such that the number r of odd divisors and the number s of even divisors are both even divisors of n and n is the first number for which the triple (r,s,t) occurs, where t is the number of divisors of n.

Table of values

List of values