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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 14 |
| 3 | 114 |
| 4 | 675 |
| 5 | 2610 |
| 6 | 6576 |
| 7 | 14616 |
| 8 | 27423 |
| 9 | 65758 |
| 10 | 121590 |
| 11 | 200250 |
| 12 | 354600 |
| 13 | 481740 |
| 14 | 636111 |
| 15 | 972946 |
| 16 | 1543438 |
| 17 | 2052330 |
| 18 | 2654850 |
| 19 | 3609375 |
| 20 | 4292820 |
| 21 | 5326308 |
| 22 | 6902883 |
| 23 | 8780068 |
| 24 | 12023616 |
| 25 | 15516000 |
| 26 | 17510850 |
| 27 | 19669731 |
| 28 | 22045986 |
| 29 | 24606288 |
[1,14,114,675,2610,6576,14616,27423,65758,121590, 200250,354600,481740,636111,972946,1543438, 2052330,2654850,3609375,4292820,5326308,6902883, 8780068,12023616,15516000,17510850,19669731, 22045986,24606288] |