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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 0 |
| 2 | 0 |
| 3 | 1 |
| 4 | 1 |
| 5 | 3 |
| 6 | 5 |
| 7 | 7 |
| 8 | 12 |
| 9 | 17 |
| 10 | 26 |
| 11 | 34 |
| 12 | 49 |
| 13 | 66 |
| 14 | 90 |
| 15 | 118 |
| 16 | 155 |
| 17 | 203 |
| 18 | 261 |
| 19 | 337 |
| 20 | 428 |
| 21 | 546 |
| 22 | 685 |
| 23 | 863 |
| 24 | 1075 |
| 25 | 1345 |
| 26 | 1664 |
| 27 | 2060 |
| 28 | 2538 |
| 29 | 3118 |
| 30 | 3816 |
| 31 | 4661 |
| 32 | 5680 |
| 33 | 6901 |
| 34 | 8368 |
| 35 | 10111 |
| 36 | 12207 |
| 37 | 14690 |
| 38 | 17656 |
| 39 | 21155 |
| 40 | 25326 |
| 41 | 30238 |
| 42 | 36058 |
| 43 | 42901 |
| 44 | 50973 |
| 45 | 60438 |
| 46 | 71568 |
| 47 | 84586 |
[0,0,0,1,1,3,5,7,12,17,26,34,49,66,90,118,155,203, 261,337,428,546,685,863,1075,1345,1664,2060,2538, 3118,3816,4661,5680,6901,8368,10111,12207,14690, 17656,21155,25326,30238,36058,42901,50973,60438, 71568,84586] |