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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 5 |
| 3 | 19 |
| 4 | 79 |
| 5 | 326 |
| 6 | 1414 |
| 7 | 6198 |
| 8 | 27794 |
| 9 | 126233 |
| 10 | 580885 |
| 11 | 2700135 |
| 12 | 12665756 |
| 13 | 59869222 |
| 14 | 284919675 |
| 15 | 1364009722 |
| 16 | 6564545500 |
| 17 | 31742029545 |
| 18 | 154134718727 |
| 19 | 751316355122 |
| 20 | 3674923035139 |
| 21 | 18031965040197 |
| 22 | 88734141475113 |
| 23 | 437813286219942 |
| 24 | 2165445447313147 |
[1,1,5,19,79,326,1414,6198,27794,126233,580885, 2700135,12665756,59869222,284919675,1364009722, 6564545500,31742029545,154134718727,751316355122, 3674923035139,18031965040197,88734141475113, 437813286219942,2165445447313147] |