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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 0 |
| 3 | 1 |
| 4 | 1 |
| 5 | 4 |
| 6 | 6 |
| 7 | 9 |
| 8 | 13 |
| 9 | 21 |
| 10 | 28 |
| 11 | 35 |
| 12 | 52 |
| 13 | 68 |
| 14 | 89 |
| 15 | 121 |
| 16 | 155 |
| 17 | 205 |
| 18 | 264 |
| 19 | 340 |
| 20 | 433 |
| 21 | 555 |
| 22 | 693 |
| 23 | 872 |
| 24 | 1095 |
| 25 | 1367 |
| 26 | 1695 |
| 27 | 2107 |
| 28 | 2580 |
| 29 | 3180 |
| 30 | 3911 |
| 31 | 4773 |
| 32 | 5803 |
| 33 | 7083 |
| 34 | 8565 |
| 35 | 10364 |
| 36 | 12515 |
| 37 | 15077 |
| 38 | 18075 |
| 39 | 21721 |
| 40 | 25936 |
| 41 | 31023 |
| 42 | 36954 |
| 43 | 43984 |
| 44 | 52152 |
| 45 | 61966 |
| 46 | 73238 |
| 47 | 86586 |
[0,1,0,1,1,4,6,9,13,21,28,35,52,68,89,121,155,205, 264,340,433,555,693,872,1095,1367,1695,2107,2580, 3180,3911,4773,5803,7083,8565,10364,12515,15077, 18075,21721,25936,31023,36954,43984,52152,61966, 73238,86586] |