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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 3 |
| 2 | 8 |
| 3 | 19 |
| 4 | 45 |
| 5 | 102 |
| 6 | 232 |
| 7 | 524 |
| 8 | 1181 |
| 9 | 2659 |
| 10 | 5984 |
| 11 | 13466 |
| 12 | 30300 |
| 13 | 68177 |
| 14 | 153400 |
| 15 | 345151 |
| 16 | 776590 |
| 17 | 1747330 |
| 18 | 3931495 |
| 19 | 8845865 |
| 20 | 19903197 |
| 21 | 44782195 |
| 22 | 100759939 |
| 23 | 226709865 |
| 24 | 510097199 |
| 25 | 1147718699 |
| 26 | 2582367075 |
| 27 | 5810325919 |
| 28 | 13073233320 |
| 29 | 29414774972 |
| 30 | 66183243689 |
| 31 | 148912298302 |
[1,3,8,19,45,102,232,524,1181,2659,5984,13466, 30300,68177,153400,345151,776590,1747330,3931495, 8845865,19903197,44782195,100759939,226709865, 510097199,1147718699,2582367075,5810325919, 13073233320,29414774972,66183243689,148912298302] |