login

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”).

A029796 as a simple table

na(n)
10
21
31000
41000000
51000000000
61000000000000
71000000000000000
81246600760666624
91315559990715517
102325413183184125
112663883812634624
124050549951695416
134544600014144000

[0,1,1000,1000000,1000000000,1000000000000,
 1000000000000000,1246600760666624,
 1315559990715517,2325413183184125,
 2663883812634624,4050549951695416,
 4544600014144000]