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| n | a(n) |
|---|---|
| 1 | 42 |
| 2 | 708 |
| 3 | 5369 |
| 4 | 17417 |
| 5 | 47796 |
| 6 | 99261 |
| 7 | 194278 |
| 8 | 331955 |
| 9 | 546805 |
| 10 | 833946 |
| 11 | 1245314 |
| 12 | 1762265 |
| 13 | 2461837 |
| 14 | 3311680 |
| 15 | 4402405 |
| 16 | 5700598 |
| 17 | 7322231 |
| 18 | 9200878 |
| 19 | 11494161 |
| 20 | 14108123 |
| 21 | 17224438 |
| 22 | 20752264 |
| 23 | 24894009 |
| 24 | 29506128 |
| 25 | 34854099 |
| 26 | 40780391 |
| 27 | 47552050 |
[42,708,5369,17417,47796,99261,194278,331955, 546805,833946,1245314,1762265,2461837,3311680, 4402405,5700598,7322231,9200878,11494161,14108123, 17224438,20752264,24894009,29506128,34854099, 40780391,47552050] |