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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 3 |
| 3 | 4 |
| 4 | 11 |
| 5 | 16 |
| 6 | 43 |
| 7 | 65 |
| 8 | 173 |
| 9 | 267 |
| 10 | 707 |
| 11 | 1105 |
| 12 | 2917 |
| 13 | 4597 |
| 14 | 12111 |
| 15 | 19196 |
| 16 | 50503 |
| 17 | 80380 |
| 18 | 211263 |
| 19 | 337284 |
| 20 | 885831 |
| 21 | 1417582 |
| 22 | 3720995 |
| 23 | 5965622 |
| 24 | 15652239 |
| 25 | 25130844 |
| 26 | 65913927 |
| 27 | 105954110 |
| 28 | 277822147 |
| 29 | 447015744 |
| 30 | 1171853635 |
| 31 | 1886996681 |
[1,1,3,4,11,16,43,65,173,267,707,1105,2917,4597, 12111,19196,50503,80380,211263,337284,885831, 1417582,3720995,5965622,15652239,25130844, 65913927,105954110,277822147,447015744,1171853635, 1886996681] |