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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 1 |
| 5 | 1 |
| 6 | 2 |
| 7 | 3 |
| 8 | 6 |
| 9 | 8 |
| 10 | 13 |
| 11 | 18 |
| 12 | 28 |
| 13 | 38 |
| 14 | 55 |
| 15 | 74 |
| 16 | 105 |
| 17 | 139 |
| 18 | 190 |
| 19 | 250 |
| 20 | 336 |
| 21 | 436 |
| 22 | 575 |
| 23 | 740 |
| 24 | 963 |
| 25 | 1228 |
| 26 | 1577 |
| 27 | 1995 |
| 28 | 2538 |
| 29 | 3186 |
| 30 | 4013 |
| 31 | 5005 |
| 32 | 6256 |
| 33 | 7751 |
| 34 | 9617 |
| 35 | 11847 |
| 36 | 14605 |
| 37 | 17894 |
| 38 | 21927 |
| 39 | 26730 |
| 40 | 32582 |
| 41 | 39531 |
| 42 | 47942 |
| 43 | 57915 |
| 44 | 69920 |
| 45 | 84114 |
| 46 | 101116 |
| 47 | 121176 |
| 48 | 145095 |
| 49 | 173248 |
[0,0,0,1,1,2,3,6,8,13,18,28,38,55,74,105,139,190, 250,336,436,575,740,963,1228,1577,1995,2538,3186, 4013,5005,6256,7751,9617,11847,14605,17894,21927, 26730,32582,39531,47942,57915,69920,84114,101116, 121176,145095,173248] |