A018509 - OEIS

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A018509 as a simple table

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	6
7	9
8	10
9	12
10	15
11	18
12	20
13	27
14	30
15	36
16	45
17	54
18	60
19	90
20	108
21	135
22	180
23	270
24	540

[1,2,3,4,5,6,9,10,12,15,18,20,27,30,36,45,54,60, 90,108,135,180,270,540]

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	6
7	9
8	10
9	12
10	15
11	18
12	20
13	27
14	30
15	36
16	45
17	54
18	60
19	90
20	108
21	135
22	180
23	270
24	540

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	6
7	9
8	10
9	12
10	15
11	18
12	20
13	27
14	30
15	36
16	45
17	54
18	60
19	90
20	108
21	135
22	180
23	270
24	540

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	6
7	9
8	10
9	12
10	15
11	18
12	20
13	27
14	30
15	36
16	45
17	54
18	60
19	90
20	108
21	135
22	180
23	270
24	540