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| n | a(n) |
|---|---|
| 1 | 12260 |
| 2 | 50454 |
| 3 | 211579 |
| 4 | 686988 |
| 5 | 2289173 |
| 6 | 7113819 |
| 7 | 22624962 |
| 8 | 68677228 |
| 9 | 207208428 |
| 10 | 608944631 |
| 11 | 1780628620 |
| 12 | 5159525456 |
| 13 | 14933521713 |
| 14 | 43117561790 |
| 15 | 124499677479 |
| 16 | 359267692474 |
| 17 | 1036713990381 |
| 18 | 2990837952514 |
| 19 | 8627840211075 |
| 20 | 24886681311098 |
[12260,50454,211579,686988,2289173,7113819, 22624962,68677228,207208428,608944631,1780628620, 5159525456,14933521713,43117561790,124499677479, 359267692474,1036713990381,2990837952514, 8627840211075,24886681311098] |