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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 1 |
| 5 | 2 |
| 6 | 3 |
| 7 | 7 |
| 8 | 10 |
| 9 | 15 |
| 10 | 23 |
| 11 | 34 |
| 12 | 46 |
| 13 | 67 |
| 14 | 90 |
| 15 | 121 |
| 16 | 164 |
| 17 | 219 |
| 18 | 285 |
| 19 | 375 |
| 20 | 483 |
| 21 | 622 |
| 22 | 799 |
| 23 | 1017 |
| 24 | 1284 |
| 25 | 1621 |
| 26 | 2033 |
| 27 | 2537 |
| 28 | 3158 |
| 29 | 3915 |
| 30 | 4832 |
| 31 | 5953 |
| 32 | 7303 |
| 33 | 8930 |
| 34 | 10896 |
| 35 | 13248 |
| 36 | 16071 |
| 37 | 19451 |
| 38 | 23482 |
| 39 | 28272 |
| 40 | 33977 |
| 41 | 40736 |
| 42 | 48741 |
| 43 | 58201 |
| 44 | 69367 |
| 45 | 82506 |
| 46 | 97986 |
| 47 | 116139 |
[0,0,0,1,2,3,7,10,15,23,34,46,67,90,121,164,219, 285,375,483,622,799,1017,1284,1621,2033,2537,3158, 3915,4832,5953,7303,8930,10896,13248,16071,19451, 23482,28272,33977,40736,48741,58201,69367,82506, 97986,116139] |