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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”).

A203333 as a simple table

na(n)
11
236
31311
427056
5532547
612872510
7327579980
88009744714
9193577903773
104737630434523
11116753918774537
122874720279855525
1370727573042967301
141741732763961365190
1542927969047213245402
161058288844307696250301

[1,36,1311,27056,532547,12872510,327579980,
 8009744714,193577903773,4737630434523,
 116753918774537,2874720279855525,
 70727573042967301,1741732763961365190,
 42927969047213245402,1058288844307696250301]