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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 15 |
| 3 | 69 |
| 4 | 203 |
| 5 | 467 |
| 6 | 935 |
| 7 | 1661 |
| 8 | 2770 |
| 9 | 4326 |
| 10 | 6476 |
| 11 | 9280 |
| 12 | 13025 |
| 13 | 17635 |
| 14 | 23475 |
| 15 | 30614 |
| 16 | 39319 |
| 17 | 49557 |
| 18 | 61969 |
| 19 | 76227 |
| 20 | 93166 |
| 21 | 112525 |
| 22 | 134801 |
| 23 | 159969 |
| 24 | 189233 |
| 25 | 221589 |
| 26 | 258185 |
| 27 | 299022 |
| 28 | 344875 |
| 29 | 395057 |
| 30 | 451641 |
| 31 | 512851 |
| 32 | 580999 |
| 33 | 655166 |
| 34 | 736374 |
[0,1,15,69,203,467,935,1661,2770,4326,6476,9280, 13025,17635,23475,30614,39319,49557,61969,76227, 93166,112525,134801,159969,189233,221589,258185, 299022,344875,395057,451641,512851,580999,655166, 736374] |