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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 1 |
| 3 | 2 |
| 4 | 3 |
| 5 | 4 |
| 6 | 10 |
| 7 | 11 |
| 8 | 29 |
| 9 | 40 |
| 10 | 76 |
| 11 | 199 |
| 12 | 521 |
| 13 | 1364 |
| 14 | 3571 |
| 15 | 9349 |
| 16 | 24476 |
| 17 | 64079 |
| 18 | 167761 |
| 19 | 439204 |
| 20 | 1149851 |
| 21 | 3010349 |
| 22 | 7881196 |
| 23 | 20633239 |
| 24 | 54018521 |
| 25 | 141422324 |
| 26 | 370248451 |
| 27 | 969323029 |
| 28 | 2537720636 |
| 29 | 6643838879 |
| 30 | 17393796001 |
| 31 | 45537549124 |
| 32 | 119218851371 |
| 33 | 312119004989 |
| 34 | 817138163596 |
[0,1,2,3,4,10,11,29,40,76,199,521,1364,3571,9349, 24476,64079,167761,439204,1149851,3010349,7881196, 20633239,54018521,141422324,370248451,969323029, 2537720636,6643838879,17393796001,45537549124, 119218851371,312119004989,817138163596] |