A211384 - cp's OEIS frontend

A211384 a(1) = 1, a(2) = 3; for n>2, a(n) = smallest number > a(n-1) such that a(n) is divisible by a(d) for all divisors d of n.

n	a(n)
1	1
2	3
3	4
4	6
5	7
6	12
7	13
8	18
9	20
10	21
11	22
12	24
13	25
14	39
15	56
16	72
17	73
18	120
19	121
20	126
21	156
22	198
23	199
24	216
25	217
26	225
27	240
28	312
29	313
30	336
31	337
32	360
33	396
34	438
35	455
36	480
37	481
38	726
39	800
40	882
41	883
42	936
43	937
44	990
45	1120
46	1194
47	1195
48	1296
49	1300
50	1302
51	1460
52	1800
53	1801
54	1920

[1, 3, 4, 6, 7, 12, 13, 18, 20, 21, 22, 24, 25, 39, 56, 72, 73, 120, 121, 126, 156, 198, 199, 216, 217, 225, 240, 312, 313, 336, 337, 360, 396, 438, 455, 480, 481, 726, 800, 882, 883, 936, 937, 990, 1120, 1194, 1195, 1296, 1300, 1302, 1460, 1800, 1801, 1920]

cp's OEIS Frontend

A211384 a(1) = 1, a(2) = 3; for n>2, a(n) = smallest number > a(n-1) such that a(n) is divisible by a(d) for all divisors d of n.

Table of values

List of values