The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 2005 |
| 2 | 10195 |
| 3 | 53754 |
| 4 | 283870 |
| 5 | 1467519 |
| 6 | 7590348 |
| 7 | 39456394 |
| 8 | 205613584 |
| 9 | 1069115223 |
| 10 | 5552489273 |
| 11 | 28846955673 |
| 12 | 149982816083 |
| 13 | 779799085894 |
| 14 | 4053228054749 |
| 15 | 21065331609232 |
| 16 | 109491402138501 |
| 17 | 569147165923973 |
| 18 | 2958438464766510 |
[2005,10195,53754,283870,1467519,7590348,39456394, 205613584,1069115223,5552489273,28846955673, 149982816083,779799085894,4053228054749, 21065331609232,109491402138501,569147165923973, 2958438464766510] |