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| n | a(n) |
|---|---|
| 0 | 10 |
| 1 | 75 |
| 2 | 490 |
| 3 | 2956 |
| 4 | 16944 |
| 5 | 93800 |
| 6 | 506600 |
| 7 | 2687256 |
| 8 | 14064904 |
| 9 | 72873880 |
| 10 | 374671560 |
| 11 | 1914880856 |
| 12 | 9741440264 |
| 13 | 49378177560 |
| 14 | 249583291720 |
| 15 | 1258711575256 |
| 16 | 6336814854024 |
| 17 | 31857331730840 |
| 18 | 159980377179080 |
| 19 | 802678826106456 |
| 20 | 4024508089842184 |
| 21 | 20167014882109720 |
[10,75,490,2956,16944,93800,506600,2687256, 14064904,72873880,374671560,1914880856,9741440264, 49378177560,249583291720,1258711575256, 6336814854024,31857331730840,159980377179080, 802678826106456,4024508089842184, 20167014882109720] |