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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”).

A258487 as a simple table

na(n)
11
21
314
42140
51017219
61110178602
72320017306125
88278981347401059
946556715158334549170
10388779284837787599307987
114605471565794120802036550000
1274633554055057890778698344509705
131606481673354648219373898238155693682
1444821655543075499856527523557216582931002

[1,1,14,2140,1017219,1110178602,2320017306125,
 8278981347401059,46556715158334549170,
 388779284837787599307987,
 4605471565794120802036550000,
 74633554055057890778698344509705,
 1606481673354648219373898238155693682,
 44821655543075499856527523557216582931002]