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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 3 |
| 2 | 17 |
| 3 | 56 |
| 4 | 140 |
| 5 | 295 |
| 6 | 553 |
| 7 | 952 |
| 8 | 1536 |
| 9 | 2355 |
| 10 | 3465 |
| 11 | 4928 |
| 12 | 6812 |
| 13 | 9191 |
| 14 | 12145 |
| 15 | 15760 |
| 16 | 20128 |
| 17 | 25347 |
| 18 | 31521 |
| 19 | 38760 |
| 20 | 47180 |
| 21 | 56903 |
| 22 | 68057 |
| 23 | 80776 |
| 24 | 95200 |
| 25 | 111475 |
| 26 | 129753 |
| 27 | 150192 |
| 28 | 172956 |
| 29 | 198215 |
| 30 | 226145 |
| 31 | 256928 |
| 32 | 290752 |
| 33 | 327811 |
| 34 | 368305 |
| 35 | 412440 |
| 36 | 460428 |
[0,3,17,56,140,295,553,952,1536,2355,3465,4928, 6812,9191,12145,15760,20128,25347,31521,38760, 47180,56903,68057,80776,95200,111475,129753, 150192,172956,198215,226145,256928,290752,327811, 368305,412440,460428] |