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”).

A165540 as a simple table

na(n)
11
22
36
422
589
6376
71611
86901
929375
10123996
11518971
122155145
138888348
1436442184
15148669894
16603984658
172445184835
189870338447
1939746337616
20159728191141
21640811439917
222567220813272
2310272592695691
2441064215020977
25164014588869574
26654627778362521
272611244306191009
2810410752330836178
2941488934932279847
30165282459721996836
31658248561748273483

[1,2,6,22,89,376,1611,6901,29375,123996,518971,
 2155145,8888348,36442184,148669894,603984658,
 2445184835,9870338447,39746337616,159728191141,
 640811439917,2567220813272,10272592695691,
 41064215020977,164014588869574,654627778362521,
 2611244306191009,10410752330836178,
 41488934932279847,165282459721996836,
 658248561748273483]