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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 3 |
| 2 | 20 |
| 3 | 48 |
| 4 | 104 |
| 5 | 201 |
| 6 | 369 |
| 7 | 651 |
| 8 | 1120 |
| 9 | 1892 |
| 10 | 3156 |
| 11 | 5217 |
| 12 | 8569 |
| 13 | 14011 |
| 14 | 22836 |
| 15 | 37136 |
| 16 | 60296 |
| 17 | 97793 |
| 18 | 158530 |
| 19 | 256807 |
| 20 | 415866 |
| 21 | 673249 |
| 22 | 1089740 |
| 23 | 1763665 |
| 24 | 2854134 |
| 25 | 4618583 |
| 26 | 7473558 |
| 27 | 12093041 |
| 28 | 19567560 |
| 29 | 31661625 |
| 30 | 51230274 |
| 31 | 82893055 |
| 32 | 134124554 |
| 33 | 217018905 |
| 34 | 351144828 |
[1,3,20,48,104,201,369,651,1120,1892,3156,5217, 8569,14011,22836,37136,60296,97793,158530,256807, 415866,673249,1089740,1763665,2854134,4618583, 7473558,12093041,19567560,31661625,51230274, 82893055,134124554,217018905,351144828] |