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”).

A017268 as a simple table

na(n)
068719476736
1582622237229761
295428956661682176
33379220508056640625
452654090776777588736
5491258904256726154641
63226266762397899821056
716409682740640811134241
868719476736000000000000
9246990403565262140303521

[68719476736,582622237229761,95428956661682176,
 3379220508056640625,52654090776777588736,
 491258904256726154641,3226266762397899821056,
 16409682740640811134241,68719476736000000000000,
 246990403565262140303521]