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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 4 |
| 3 | 6 |
| 4 | 11 |
| 5 | 20 |
| 6 | 36 |
| 7 | 66 |
| 8 | 119 |
| 9 | 216 |
| 10 | 393 |
| 11 | 714 |
| 12 | 1296 |
| 13 | 2355 |
| 14 | 4280 |
| 15 | 7776 |
| 16 | 14130 |
| 17 | 25676 |
| 18 | 46656 |
| 19 | 84780 |
| 20 | 154055 |
| 21 | 279936 |
| 22 | 508678 |
| 23 | 924329 |
| 24 | 1679616 |
| 25 | 3052065 |
| 26 | 5545970 |
| 27 | 10077696 |
| 28 | 18312389 |
| 29 | 33275820 |
| 30 | 60466176 |
| 31 | 109874334 |
| 32 | 199654915 |
| 33 | 362797056 |
| 34 | 659246002 |
[1,2,4,6,11,20,36,66,119,216,393,714,1296,2355, 4280,7776,14130,25676,46656,84780,154055,279936, 508678,924329,1679616,3052065,5545970,10077696, 18312389,33275820,60466176,109874334,199654915, 362797056,659246002] |