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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 2 |
| 4 | 4 |
| 5 | 6 |
| 6 | 10 |
| 7 | 19 |
| 8 | 32 |
| 9 | 54 |
| 10 | 98 |
| 11 | 170 |
| 12 | 292 |
| 13 | 520 |
| 14 | 909 |
| 15 | 1577 |
| 16 | 2787 |
| 17 | 4883 |
| 18 | 8515 |
| 19 | 14998 |
| 20 | 26299 |
| 21 | 45984 |
| 22 | 80863 |
| 23 | 141844 |
| 24 | 248381 |
| 25 | 436406 |
| 26 | 765649 |
| 27 | 1341844 |
| 28 | 2356500 |
| 29 | 4134749 |
| 30 | 7249981 |
| 31 | 12728630 |
| 32 | 22335110 |
| 33 | 39174776 |
| 34 | 68766785 |
| 35 | 120670190 |
| 36 | 211689586 |
| 37 | 371558266 |
| 38 | 652014636 |
[1,1,1,2,4,6,10,19,32,54,98,170,292,520,909,1577, 2787,4883,8515,14998,26299,45984,80863,141844, 248381,436406,765649,1341844,2356500,4134749, 7249981,12728630,22335110,39174776,68766785, 120670190,211689586,371558266,652014636] |