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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”).

A230874 as a simple table

na(n)
11
22
34
44
516
616
716
816
965536
1065536
1165536
1265536
1365536
1465536
1565536
1665536

[1,2,4,4,16,16,16,16,65536,65536,65536,65536,
 65536,65536,65536,65536]