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A057784 as a simple table
| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 2 |
| 4 | 4 |
| 5 | 4 |
| 6 | 10 |
| 7 | 13 |
| 8 | 29 |
| 9 | 47 |
| 10 | 100 |
| 11 | 181 |
| 12 | 383 |
| 13 | 738 |
| 14 | 1539 |
| 15 | 3087 |
| 16 | 6419 |
| 17 | 13135 |
| 18 | 27402 |
| 19 | 56779 |
| 20 | 118876 |
| 21 | 248384 |
| 22 | 521850 |
| 23 | 1096261 |
| 24 | 2310793 |
| 25 | 4874305 |
| 26 | 10305560 |
| 27 | 21810868 |
| 28 | 46239224 |
[1,2,2,4,4,10,13,29,47,100,181,383,738,1539,3087, 6419,13135,27402,56779,118876,248384,521850, 1096261,2310793,4874305,10305560,21810868, 46239224] |