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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 1 |
| 5 | 1 |
| 6 | 3 |
| 7 | 4 |
| 8 | 8 |
| 9 | 12 |
| 10 | 19 |
| 11 | 27 |
| 12 | 41 |
| 13 | 56 |
| 14 | 80 |
| 15 | 109 |
| 16 | 150 |
| 17 | 199 |
| 18 | 268 |
| 19 | 350 |
| 20 | 461 |
| 21 | 596 |
| 22 | 771 |
| 23 | 984 |
| 24 | 1258 |
| 25 | 1589 |
| 26 | 2007 |
| 27 | 2514 |
| 28 | 3145 |
| 29 | 3905 |
| 30 | 4846 |
| 31 | 5973 |
| 32 | 7356 |
| 33 | 9010 |
| 34 | 11020 |
| 35 | 13418 |
| 36 | 16315 |
| 37 | 19756 |
| 38 | 23890 |
| 39 | 28788 |
| 40 | 34639 |
| 41 | 41548 |
| 42 | 49767 |
| 43 | 59441 |
| 44 | 70899 |
| 45 | 84354 |
| 46 | 100221 |
| 47 | 118803 |
| 48 | 140645 |
| 49 | 166153 |
| 50 | 196035 |
| 51 | 230853 |
| 52 | 271512 |
[0,0,0,0,1,1,3,4,8,12,19,27,41,56,80,109,150,199, 268,350,461,596,771,984,1258,1589,2007,2514,3145, 3905,4846,5973,7356,9010,11020,13418,16315,19756, 23890,28788,34639,41548,49767,59441,70899,84354, 100221,118803,140645,166153,196035,230853,271512] |