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| n | a(n) |
|---|---|
| 1 | 944 |
| 2 | 3540 |
| 3 | 13260 |
| 4 | 49784 |
| 5 | 187196 |
| 6 | 705072 |
| 7 | 2659824 |
| 8 | 10049936 |
| 9 | 38030588 |
| 10 | 144134184 |
| 11 | 547062036 |
| 12 | 2079436784 |
| 13 | 7915312712 |
| 14 | 30172181304 |
| 15 | 115169444940 |
| 16 | 440212045280 |
| 17 | 1684837886252 |
| 18 | 6456944580816 |
| 19 | 24776948509056 |
| 20 | 95196417683360 |
[944,3540,13260,49784,187196,705072,2659824, 10049936,38030588,144134184,547062036,2079436784, 7915312712,30172181304,115169444940,440212045280, 1684837886252,6456944580816,24776948509056, 95196417683360] |