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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 2 |
| 3 | 11 |
| 4 | 36 |
| 5 | 89 |
| 6 | 183 |
| 7 | 335 |
| 8 | 565 |
| 9 | 894 |
| 10 | 1347 |
| 11 | 1952 |
| 12 | 2738 |
| 13 | 3738 |
| 14 | 4988 |
| 15 | 6525 |
| 16 | 8390 |
| 17 | 10627 |
| 18 | 13281 |
| 19 | 16401 |
| 20 | 20039 |
| 21 | 24248 |
| 22 | 29085 |
| 23 | 34610 |
| 24 | 40884 |
| 25 | 47972 |
| 26 | 55942 |
| 27 | 64863 |
| 28 | 74808 |
| 29 | 85853 |
| 30 | 98075 |
| 31 | 111555 |
| 32 | 126377 |
| 33 | 142626 |
| 34 | 160391 |
| 35 | 179764 |
| 36 | 200838 |
| 37 | 223710 |
| 38 | 248480 |
| 39 | 275249 |
| 40 | 304122 |
[0,2,11,36,89,183,335,565,894,1347,1952,2738,3738, 4988,6525,8390,10627,13281,16401,20039,24248, 29085,34610,40884,47972,55942,64863,74808,85853, 98075,111555,126377,142626,160391,179764,200838, 223710,248480,275249,304122] |