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| n | a(n) |
|---|---|
| 1 | 9560 |
| 2 | 35296 |
| 3 | 171400 |
| 4 | 822072 |
| 5 | 2580056 |
| 6 | 8115610 |
| 7 | 23589212 |
| 8 | 59995430 |
| 9 | 145387986 |
| 10 | 331801795 |
| 11 | 719425086 |
| 12 | 1522572859 |
| 13 | 3138860414 |
| 14 | 6329390631 |
| 15 | 12570672314 |
| 16 | 24624380444 |
| 17 | 47807796436 |
| 18 | 92338992457 |
| 19 | 177468932212 |
| 20 | 339829018669 |
[9560,35296,171400,822072,2580056,8115610, 23589212,59995430,145387986,331801795,719425086, 1522572859,3138860414,6329390631,12570672314, 24624380444,47807796436,92338992457,177468932212, 339829018669] |