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”).

A133579 as a simple table

na(n)
01
11
23
31
43
59
63
79
827
93
109
1127
129
1327
1481
1527
1681
17243
1827
1981
20243
2181
22243
23729
24243
25729
262187
2781
28243
29729
30243
31729
322187
33729
342187
356561
36729
372187
386561
392187
406561
4119683
426561
4319683
4459049
456561
4619683
4759049
4819683
4959049
50177147

[1,1,3,1,3,9,3,9,27,3,9,27,9,27,81,27,81,243,27,
 81,243,81,243,729,243,729,2187,81,243,729,243,729,
 2187,729,2187,6561,729,2187,6561,2187,6561,19683,
 6561,19683,59049,6561,19683,59049,19683,59049,
 177147]