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Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 5 |
| 3 | 19 |
| 4 | 145 |
| 5 | 981 |
| 6 | 10141 |
| 7 | 98575 |
| 8 | 1289569 |
| 9 | 16314121 |
| 10 | 258568021 |
| 11 | 4023553931 |
| 12 | 74961787825 |
| 13 | 1383475135069 |
| 14 | 29636315118957 |
| 15 | 632414472704071 |
| 16 | 15316605861040321 |
| 17 | 370875832116841105 |
| 18 | 10021723060544059429 |
| 19 | 271409166367070755843 |
[1,1,5,19,145,981,10141,98575,1289569,16314121, 258568021,4023553931,74961787825,1383475135069, 29636315118957,632414472704071,15316605861040321, 370875832116841105,10021723060544059429, 271409166367070755843] |