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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”).

A316471 as a simple table

na(n)
11
21
31
42
53
66
711
821
943
1089
11185
12391
13840
141822
153975
168727
1719280
1842841
1995661
20214490

[1,1,1,2,3,6,11,21,43,89,185,391,840,1822,3975,
 8727,19280,42841,95661,214490]