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| n | a(n) |
|---|---|
| 0 | 2 |
| 1 | 5 |
| 2 | 29 |
| 3 | 194 |
| 4 | 1325 |
| 5 | 9077 |
| 6 | 62210 |
| 7 | 426389 |
| 8 | 2922509 |
| 9 | 20031170 |
| 10 | 137295677 |
| 11 | 941038565 |
| 12 | 6449974274 |
| 13 | 44208781349 |
| 14 | 303011495165 |
| 15 | 2076871684802 |
| 16 | 14235090298445 |
| 17 | 97568760404309 |
| 18 | 668746232531714 |
| 19 | 4583654867317685 |
| 20 | 31416837838692077 |
| 21 | 215334210003526850 |
| 22 | 1475922632185995869 |
[2,5,29,194,1325,9077,62210,426389,2922509, 20031170,137295677,941038565,6449974274, 44208781349,303011495165,2076871684802, 14235090298445,97568760404309,668746232531714, 4583654867317685,31416837838692077, 215334210003526850,1475922632185995869] |