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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”).

A018600 as a simple table

na(n)
11
22
34
48
511
616
722
832
944
1064
1188
12176
13352
14704

[1,2,4,8,11,16,22,32,44,64,88,176,352,704]