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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”).

A219892 as a simple table

na(n)
61
74
8624
91104045
102983458766
1110922621656743

[1,4,624,1104045,2983458766,10922621656743]