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| n | a(n) |
|---|---|
| 1 | 4013 |
| 2 | 12419 |
| 3 | 42345 |
| 4 | 137488 |
| 5 | 592230 |
| 6 | 2400740 |
| 7 | 9477253 |
| 8 | 42122229 |
| 9 | 176745069 |
| 10 | 739671776 |
| 11 | 3297306209 |
| 12 | 14026096272 |
| 13 | 60863465038 |
| 14 | 271202729485 |
| 15 | 1164405089372 |
| 16 | 5181559811105 |
| 17 | 23087264478573 |
| 18 | 99773391872257 |
| 19 | 451691184105558 |
[4013,12419,42345,137488,592230,2400740,9477253, 42122229,176745069,739671776,3297306209, 14026096272,60863465038,271202729485, 1164405089372,5181559811105,23087264478573, 99773391872257,451691184105558] |