The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 4 |
| 3 | 8 |
| 4 | 23 |
| 5 | 100 |
| 6 | 1003 |
| 7 | 31382 |
| 8 | 5149096 |
| 9 | 7091568720 |
| 10 | 287786595280763 |
| 11 | 539018517346414192796 |
| 12 | 1130813038175196801809538188145 |
| 13 | 2336855300714703790840987155549462486654700 |
| 14 | 7636154577344556445476348286247799105605643795614728449082014 |
[1,2,4,8,23,100,1003,31382,5149096,7091568720, 287786595280763,539018517346414192796, 1130813038175196801809538188145, 2336855300714703790840987155549462486654700, 76361545773445564454763482862477991056056437956147\ 28449082014] |