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Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 6 |
| 3 | 38 |
| 4 | 226 |
| 5 | 1620 |
| 6 | 12653 |
| 7 | 100234 |
| 8 | 805414 |
| 9 | 6438451 |
| 10 | 51548551 |
| 11 | 412613602 |
| 12 | 3302975055 |
| 13 | 26430263612 |
| 14 | 211464552217 |
| 15 | 1691780506515 |
| 16 | 13534316856401 |
| 17 | 108275532447418 |
| 18 | 866206527440326 |
| 19 | 6929660831723566 |
| 20 | 55437290533519366 |
[1,6,38,226,1620,12653,100234,805414,6438451, 51548551,412613602,3302975055,26430263612, 211464552217,1691780506515,13534316856401, 108275532447418,866206527440326,6929660831723566, 55437290533519366] |