| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 2 |
| 3 | 4 |
| 4 | 7 |
| 5 | 12 |
| 6 | 21 |
| 7 | 37 |
| 8 | 66 |
| 9 | 119 |
| 10 | 216 |
| 11 | 394 |
| 12 | 722 |
| 13 | 1330 |
| 14 | 2464 |
| 15 | 4590 |
| 16 | 8591 |
| 17 | 16143 |
| 18 | 30435 |
| 19 | 57550 |
| 20 | 109115 |
| 21 | 207389 |
| 22 | 395046 |
| 23 | 754028 |
| 24 | 1441972 |
| 25 | 2762765 |
| 26 | 5303467 |
| 27 | 10200386 |
| 28 | 19656529 |
| 29 | 37948282 |
| 30 | 73384081 |
| 31 | 142115377 |
| 32 | 275551756 |
| 33 | 534790473 |
| 34 | 1038702981 |
| 35 | 2018626773 |
| 36 | 3924923938 |
| 37 | 7634733313 |
[0,1,2,4,7,12,21,37,66,119,216,394,722,1330,2464, 4590,8591,16143,30435,57550,109115,207389,395046, 754028,1441972,2762765,5303467,10200386,19656529, 37948282,73384081,142115377,275551756,534790473, 1038702981,2018626773,3924923938,7634733313] |