The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 16 |
| 2 | 73 |
| 3 | 148 |
| 4 | 1537 |
| 5 | 15171 |
| 6 | 120072 |
| 7 | 1008622 |
| 8 | 9188573 |
| 9 | 81099064 |
| 10 | 701806589 |
| 11 | 6205630574 |
| 12 | 54925895637 |
| 13 | 481921246907 |
| 14 | 4241104588011 |
| 15 | 37412849210716 |
| 16 | 329363102328530 |
| 17 | 2899032130143327 |
| 18 | 25539363898162145 |
| 19 | 224935877333981373 |
[16,73,148,1537,15171,120072,1008622,9188573, 81099064,701806589,6205630574,54925895637, 481921246907,4241104588011,37412849210716, 329363102328530,2899032130143327, 25539363898162145,224935877333981373] |