The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 6 |
| 1 | 41 |
| 2 | 321 |
| 3 | 2561 |
| 4 | 20481 |
| 5 | 163841 |
| 6 | 1310721 |
| 7 | 10485761 |
| 8 | 83886081 |
| 9 | 671088641 |
| 10 | 5368709121 |
| 11 | 42949672961 |
| 12 | 343597383681 |
| 13 | 2748779069441 |
| 14 | 21990232555521 |
| 15 | 175921860444161 |
| 16 | 1407374883553281 |
| 17 | 11258999068426241 |
| 18 | 90071992547409921 |
[6,41,321,2561,20481,163841,1310721,10485761, 83886081,671088641,5368709121,42949672961, 343597383681,2748779069441,21990232555521, 175921860444161,1407374883553281, 11258999068426241,90071992547409921] |