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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”).

A226676 as a simple table

na(n)
11
20
31
411
549
617
7115
8473
931
10791
111
1229
1311491
14371
15641
162167
1719
18119
1923
203211
21106537
2277
23431
242465
252069
265575

[1,0,1,11,49,17,115,473,31,791,1,29,11491,371,641,
 2167,19,119,23,3211,106537,77,431,2465,2069,5575]