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”).

A023186 as a simple table

na(n)
12
25
323
453
5211
61847
72179
83967
916033
1024281
1138501
1258831
13203713
14206699
15413353
161272749
172198981
185102953
1910938023
2012623189
2172546283
22142414669
23162821917
24163710121
25325737821
261131241763
271791752797
283173306951
294841337887
306021542119
316807940367
327174208683
338835528511
3411179888193
3515318488291
3626329105043
3731587561361
3845241670743

[2,5,23,53,211,1847,2179,3967,16033,24281,38501,
 58831,203713,206699,413353,1272749,2198981,
 5102953,10938023,12623189,72546283,142414669,
 162821917,163710121,325737821,1131241763,
 1791752797,3173306951,4841337887,6021542119,
 6807940367,7174208683,8835528511,11179888193,
 15318488291,26329105043,31587561361,45241670743]