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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 1 |
| 4 | 2 |
| 5 | 7 |
| 6 | 18 |
| 7 | 34 |
| 8 | 62 |
| 9 | 121 |
| 10 | 182 |
| 11 | 292 |
| 12 | 460 |
| 13 | 651 |
| 14 | 924 |
| 15 | 1339 |
| 16 | 1764 |
| 17 | 2376 |
| 18 | 3196 |
| 19 | 4074 |
| 20 | 5214 |
| 21 | 6740 |
| 22 | 8294 |
| 23 | 10318 |
| 24 | 12850 |
| 25 | 15496 |
| 26 | 18746 |
| 27 | 22811 |
| 28 | 26936 |
| 29 | 32011 |
| 30 | 38096 |
| 31 | 44376 |
| 32 | 51816 |
| 33 | 60737 |
| 34 | 69768 |
| 35 | 80478 |
| 36 | 92954 |
| 37 | 105735 |
| 38 | 120498 |
| 39 | 137697 |
| 40 | 155078 |
| 41 | 175168 |
| 42 | 198086 |
| 43 | 221452 |
[0,0,1,2,7,18,34,62,121,182,292,460,651,924,1339, 1764,2376,3196,4074,5214,6740,8294,10318,12850, 15496,18746,22811,26936,32011,38096,44376,51816, 60737,69768,80478,92954,105735,120498,137697, 155078,175168,198086,221452] |