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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 1 |
| 3 | 1 |
| 4 | 4 |
| 5 | 5 |
| 6 | 14 |
| 7 | 21 |
| 8 | 48 |
| 9 | 87 |
| 10 | 180 |
| 11 | 341 |
| 12 | 704 |
| 13 | 1365 |
| 14 | 2758 |
| 15 | 5475 |
| 16 | 10976 |
| 17 | 21845 |
| 18 | 43806 |
| 19 | 87381 |
| 20 | 174960 |
| 21 | 349573 |
| 22 | 699402 |
| 23 | 1398101 |
| 24 | 2797008 |
| 25 | 5592425 |
| 26 | 11186188 |
| 27 | 22369797 |
| 28 | 44742040 |
| 29 | 89478485 |
| 30 | 178962840 |
| 31 | 357913941 |
| 32 | 715838912 |
| 33 | 1431656457 |
| 34 | 2863333392 |
| 35 | 5726623175 |
| 36 | 11453291400 |
| 37 | 22906492245 |
| 38 | 45813071890 |
[0,1,1,4,5,14,21,48,87,180,341,704,1365,2758,5475, 10976,21845,43806,87381,174960,349573,699402, 1398101,2797008,5592425,11186188,22369797, 44742040,89478485,178962840,357913941,715838912, 1431656457,2863333392,5726623175,11453291400, 22906492245,45813071890] |