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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”).

A201626 as a simple table

na(n)
11
22
36
4228
56745
6252792
711281312
8585632520
934690541994
102309813476870
11170797663069044
1213888215374348892
131231730727253607451
14118329596584708240732
1512241103359460777972760
161356712722052907806912016

[1,2,6,228,6745,252792,11281312,585632520,
 34690541994,2309813476870,170797663069044,
 13888215374348892,1231730727253607451,
 118329596584708240732,12241103359460777972760,
 1356712722052907806912016]