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| n | a(n) |
|---|---|
| 1 | 2970 |
| 2 | 12915 |
| 3 | 64242 |
| 4 | 334197 |
| 5 | 1784781 |
| 6 | 9627372 |
| 7 | 52118784 |
| 8 | 282725568 |
| 9 | 1535104449 |
| 10 | 8338827870 |
| 11 | 45306981675 |
| 12 | 246190770945 |
| 13 | 1337831174295 |
| 14 | 7270130248164 |
| 15 | 39508334496378 |
| 16 | 214702980055479 |
| 17 | 1166779600060446 |
| 18 | 6340744909288953 |
[2970,12915,64242,334197,1784781,9627372,52118784, 282725568,1535104449,8338827870,45306981675, 246190770945,1337831174295,7270130248164, 39508334496378,214702980055479,1166779600060446, 6340744909288953] |