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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 5 |
| 3 | 12 |
| 4 | 29 |
| 5 | 74 |
| 6 | 196 |
| 7 | 530 |
| 8 | 1445 |
| 9 | 3956 |
| 10 | 10862 |
| 11 | 29901 |
| 12 | 82592 |
| 13 | 229233 |
| 14 | 639967 |
| 15 | 1797288 |
| 16 | 5073707 |
| 17 | 14381347 |
| 18 | 40890492 |
| 19 | 116559600 |
| 20 | 333043360 |
| 21 | 953890490 |
| 22 | 2738788806 |
| 23 | 7881915828 |
| 24 | 22729464587 |
| 25 | 65652788211 |
| 26 | 189866467219 |
| 27 | 549596773550 |
| 28 | 1592118137130 |
| 29 | 4615680732717 |
| 30 | 13392399641613 |
| 31 | 38894563977633 |
| 32 | 113074467549440 |
| 33 | 329080350818600 |
| 34 | 958725278344368 |
| 35 | 2795854777347489 |
[1,2,5,12,29,74,196,530,1445,3956,10862,29901, 82592,229233,639967,1797288,5073707,14381347, 40890492,116559600,333043360,953890490,2738788806, 7881915828,22729464587,65652788211,189866467219, 549596773550,1592118137130,4615680732717, 13392399641613,38894563977633,113074467549440, 329080350818600,958725278344368,2795854777347489] |