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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 4 |
| 3 | 7 |
| 4 | 14 |
| 5 | 24 |
| 6 | 39 |
| 7 | 61 |
| 8 | 122 |
| 9 | 203 |
| 10 | 315 |
| 11 | 469 |
| 12 | 676 |
| 13 | 952 |
| 14 | 1307 |
| 15 | 1771 |
| 16 | 3542 |
| 17 | 5708 |
| 18 | 8432 |
| 19 | 11877 |
| 20 | 16123 |
| 21 | 21415 |
| 22 | 27835 |
| 23 | 35757 |
| 24 | 45343 |
| 25 | 57010 |
| 26 | 70778 |
| 27 | 87384 |
| 28 | 106479 |
| 29 | 129304 |
| 30 | 155802 |
| 31 | 187223 |
| 32 | 374446 |
| 33 | 588130 |
| 34 | 835800 |
| 35 | 1124981 |
| 36 | 1456282 |
| 37 | 1841361 |
| 38 | 2281772 |
| 39 | 2791896 |
| 40 | 3367162 |
[1,2,4,7,14,24,39,61,122,203,315,469,676,952,1307, 1771,3542,5708,8432,11877,16123,21415,27835,35757, 45343,57010,70778,87384,106479,129304,155802, 187223,374446,588130,835800,1124981,1456282, 1841361,2281772,2791896,3367162] |