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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 7 |
| 2 | 29 |
| 3 | 93 |
| 4 | 255 |
| 5 | 627 |
| 6 | 1419 |
| 7 | 3003 |
| 8 | 6006 |
| 9 | 11440 |
| 10 | 20878 |
| 11 | 36686 |
| 12 | 62322 |
| 13 | 102714 |
| 14 | 164730 |
| 15 | 257754 |
| 16 | 394383 |
| 17 | 591261 |
| 18 | 870067 |
| 19 | 1258675 |
| 20 | 1792505 |
| 21 | 2516085 |
| 22 | 3484845 |
| 23 | 4767165 |
| 24 | 6446700 |
| 25 | 8625006 |
| 26 | 11424492 |
| 27 | 14991724 |
| 28 | 19501108 |
| 29 | 25158980 |
| 30 | 32208132 |
| 31 | 40932804 |
| 32 | 51664173 |
[1,7,29,93,255,627,1419,3003,6006,11440,20878, 36686,62322,102714,164730,257754,394383,591261, 870067,1258675,1792505,2516085,3484845,4767165, 6446700,8625006,11424492,14991724,19501108, 25158980,32208132,40932804,51664173] |