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”).

A221300 as a simple table

na(n)
141
27305
31388449
4270434991
553074198285
610441043545431
72055191230733819
8404558715308586615
979631428749088948978
1015673309615820170766551
113084736188812654258436809
12607104281948887764280719305

[41,7305,1388449,270434991,53074198285,
 10441043545431,2055191230733819,
 404558715308586615,79631428749088948978,
 15673309615820170766551,3084736188812654258436809,
 607104281948887764280719305]