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Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

A018541 as a simple table

na(n)
11
22
33
44
55
66
78
810
912
1015
1120
1224
1325
1430
1540
1650
1760
1875
19100
20120
21150
22200
23300
24600

[1,2,3,4,5,6,8,10,12,15,20,24,25,30,40,50,60,75,
 100,120,150,200,300,600]