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”).

A197746 as a simple table

na(n)
13
231
3212
41317
59499
664832
7462515
83316363
923465652
10167021811
111187571067
128438773594
1360016633869
14426656318067
153033239021542
1621565974491771
17153321389406967
181090053687664854
197749841908849879
2055097853719155295

[3,31,212,1317,9499,64832,462515,3316363,23465652,
 167021811,1187571067,8438773594,60016633869,
 426656318067,3033239021542,21565974491771,
 153321389406967,1090053687664854,7749841908849879,
 55097853719155295]