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”).

A261731 as a simple table

na(n)
11308497
23042491
33042701
47445309
520031101
631572521
744687987
854266291
9141208619
10182316521
11237416369
12357080021
13448436321
14611641187
15699458411
16761126027
17774997367
18794065967
19836452961
20915215591
21944958941
221009194617
231581935939
241763255561
251871007371

[1308497,3042491,3042701,7445309,20031101,
 31572521,44687987,54266291,141208619,182316521,
 237416369,357080021,448436321,611641187,699458411,
 761126027,774997367,794065967,836452961,915215591,
 944958941,1009194617,1581935939,1763255561,
 1871007371]