The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 11 |
| 3 | 193 |
| 4 | 5037 |
| 5 | 176221 |
| 6 | 7755433 |
| 7 | 411995529 |
| 8 | 25665442841 |
| 9 | 1835264297881 |
| 10 | 148192928581581 |
| 11 | 13338664928207389 |
| 12 | 1324344628799752981 |
| 13 | 143792046846092303829 |
| 14 | 16949599953405295395521 |
| 15 | 2155710634160924802161041 |
| 16 | 294250014166281073851809457 |
[1,1,11,193,5037,176221,7755433,411995529, 25665442841,1835264297881,148192928581581, 13338664928207389,1324344628799752981, 143792046846092303829,16949599953405295395521, 2155710634160924802161041, 294250014166281073851809457] |