The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 110 |
| 2 | 28842 |
| 3 | 8558480 |
| 4 | 2679559018 |
| 5 | 864609808860 |
| 6 | 284430822189360 |
| 7 | 94838361498813504 |
| 8 | 31937586416482122090 |
| 9 | 10837486229625098253938 |
| 10 | 3699768692414430886979092 |
| 11 | 1269247320827841357100956000 |
| 12 | 437197260018920565848972207920 |
| 13 | 151108564566619626342188272922000 |
| 14 | 52379783376231201890753924949502656 |
| 15 | 18202391389394546898846524075693898480 |
[1,110,28842,8558480,2679559018,864609808860, 284430822189360,94838361498813504, 31937586416482122090,10837486229625098253938, 3699768692414430886979092, 1269247320827841357100956000, 437197260018920565848972207920, 151108564566619626342188272922000, 52379783376231201890753924949502656, 18202391389394546898846524075693898480] |