The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 4086 |
| 2 | 27424 |
| 3 | 223901 |
| 4 | 1736085 |
| 5 | 13744343 |
| 6 | 111505109 |
| 7 | 904174706 |
| 8 | 7347151637 |
| 9 | 59890010020 |
| 10 | 487874115891 |
| 11 | 3973213543601 |
| 12 | 32378167050225 |
| 13 | 263909697253124 |
| 14 | 2150815427720611 |
| 15 | 17528000535815815 |
| 16 | 142850512088398850 |
[4086,27424,223901,1736085,13744343,111505109, 904174706,7347151637,59890010020,487874115891, 3973213543601,32378167050225,263909697253124, 2150815427720611,17528000535815815, 142850512088398850] |