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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 3 |
| 3 | 14 |
| 4 | 48 |
| 5 | 166 |
| 6 | 324 |
| 7 | 1078 |
| 8 | 2172 |
| 9 | 4760 |
| 10 | 7204 |
| 11 | 16508 |
| 12 | 25479 |
| 13 | 48376 |
| 14 | 66016 |
| 15 | 99650 |
| 16 | 143600 |
| 17 | 238914 |
| 18 | 308115 |
| 19 | 476038 |
| 20 | 615239 |
| 21 | 818300 |
| 22 | 1024179 |
| 23 | 1481652 |
| 24 | 1804167 |
| 25 | 2417654 |
| 26 | 2918787 |
| 27 | 3742442 |
| 28 | 4535391 |
| 29 | 6022574 |
| 30 | 7025184 |
| 31 | 9105478 |
| 32 | 10784796 |
| 33 | 12958370 |
| 34 | 15000299 |
| 35 | 18108116 |
[0,3,14,48,166,324,1078,2172,4760,7204,16508, 25479,48376,66016,99650,143600,238914,308115, 476038,615239,818300,1024179,1481652,1804167, 2417654,2918787,3742442,4535391,6022574,7025184, 9105478,10784796,12958370,15000299,18108116] |