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”).

A229651 as a simple table

na(n)
01
14
228
3232
42092
519864
6195352
71970896
820275660
9211823800
102240795888
1123951292204
12258255572584
132805537209648
1430675548482880
15337307986673572
163727607821613388
1741377406950962504
18461130952671387592
195157535231753964268

[1,4,28,232,2092,19864,195352,1970896,20275660,
 211823800,2240795888,23951292204,258255572584,
 2805537209648,30675548482880,337307986673572,
 3727607821613388,41377406950962504,
 461130952671387592,5157535231753964268]