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”).

A234843 as a simple table

na(n)
11
22
35
416
551
6201
7877
84443
925284
10161698
111145508
128910291
1375373563
14687950735
156727985390

[1,2,5,16,51,201,877,4443,25284,161698,1145508,
 8910291,75373563,687950735,6727985390]