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| n | a(n) |
|---|---|
| 1 | 239 |
| 2 | 9503 |
| 3 | 140236 |
| 4 | 1226491 |
| 5 | 7906972 |
| 6 | 41334135 |
| 7 | 183720802 |
| 8 | 715114500 |
| 9 | 2489822632 |
| 10 | 7881608430 |
| 11 | 22979660094 |
| 12 | 62362461624 |
| 13 | 158897321204 |
| 14 | 382876827441 |
| 15 | 877788083326 |
| 16 | 1924637063386 |
| 17 | 4053719944340 |
| 18 | 8232970841532 |
| 19 | 16176720454482 |
[239,9503,140236,1226491,7906972,41334135, 183720802,715114500,2489822632,7881608430, 22979660094,62362461624,158897321204,382876827441, 877788083326,1924637063386,4053719944340, 8232970841532,16176720454482] |