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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 3 |
| 3 | 5 |
| 4 | 10 |
| 5 | 22 |
| 6 | 49 |
| 7 | 107 |
| 8 | 229 |
| 9 | 486 |
| 10 | 1035 |
| 11 | 2225 |
| 12 | 4825 |
| 13 | 10508 |
| 14 | 22875 |
| 15 | 49624 |
| 16 | 107154 |
| 17 | 230356 |
| 18 | 493471 |
| 19 | 1054602 |
| 20 | 2250850 |
| 21 | 4801825 |
| 22 | 10244940 |
| 23 | 21865466 |
| 24 | 46680201 |
| 25 | 99659713 |
| 26 | 212697816 |
| 27 | 453634533 |
| 28 | 966551216 |
| 29 | 2057052465 |
| 30 | 4372660927 |
| 31 | 9284272791 |
| 32 | 19692591418 |
[1,2,3,5,10,22,49,107,229,486,1035,2225,4825, 10508,22875,49624,107154,230356,493471,1054602, 2250850,4801825,10244940,21865466,46680201, 99659713,212697816,453634533,966551216,2057052465, 4372660927,9284272791,19692591418] |