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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 4 |
| 3 | 8 |
| 4 | 21 |
| 5 | 39 |
| 6 | 92 |
| 7 | 170 |
| 8 | 331 |
| 9 | 593 |
| 10 | 1176 |
| 11 | 2118 |
| 12 | 3699 |
| 13 | 6658 |
| 14 | 11347 |
| 15 | 19760 |
| 16 | 32746 |
| 17 | 54854 |
| 18 | 90245 |
| 19 | 149906 |
| 20 | 237953 |
| 21 | 387937 |
| 22 | 608531 |
| 23 | 970912 |
| 24 | 1510331 |
| 25 | 2380015 |
| 26 | 3610620 |
| 27 | 5634251 |
| 28 | 8474110 |
| 29 | 12934092 |
| 30 | 19440955 |
| 31 | 29291690 |
| 32 | 43233800 |
| 33 | 64825830 |
| 34 | 94779612 |
| 35 | 139820232 |
[1,4,8,21,39,92,170,331,593,1176,2118,3699,6658, 11347,19760,32746,54854,90245,149906,237953, 387937,608531,970912,1510331,2380015,3610620, 5634251,8474110,12934092,19440955,29291690, 43233800,64825830,94779612,139820232] |