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| n | a(n) |
|---|---|
| 1 | 37200 |
| 2 | 183210 |
| 3 | 978154 |
| 4 | 2148260 |
| 5 | 4796417 |
| 6 | 12136355 |
| 7 | 25618602 |
| 8 | 56219231 |
| 9 | 118029035 |
| 10 | 245830679 |
| 11 | 490847254 |
| 12 | 974839744 |
| 13 | 1887834479 |
| 14 | 3581112558 |
| 15 | 6699292579 |
| 16 | 12319163671 |
| 17 | 22287681131 |
| 18 | 39795975182 |
| 19 | 70067976674 |
| 20 | 121758652567 |
[37200,183210,978154,2148260,4796417,12136355, 25618602,56219231,118029035,245830679,490847254, 974839744,1887834479,3581112558,6699292579, 12319163671,22287681131,39795975182,70067976674, 121758652567] |