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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 5 |
| 3 | 11 |
| 4 | 39 |
| 5 | 144 |
| 6 | 467 |
| 7 | 1673 |
| 8 | 5825 |
| 9 | 20404 |
| 10 | 72246 |
| 11 | 255137 |
| 12 | 905611 |
| 13 | 3220635 |
| 14 | 11472797 |
| 15 | 40956011 |
| 16 | 146412581 |
| 17 | 524169045 |
| 18 | 1878990744 |
| 19 | 6743276222 |
| 20 | 24225861208 |
| 21 | 87117117408 |
| 22 | 313552816720 |
| 23 | 1129460906243 |
| 24 | 4071526431770 |
| 25 | 14687417557462 |
| 26 | 53016891233217 |
| 27 | 191489301052386 |
| 28 | 692020548649474 |
| 29 | 2502200138127277 |
| 30 | 9051895373199102 |
| 31 | 32761105883346693 |
[0,5,11,39,144,467,1673,5825,20404,72246,255137, 905611,3220635,11472797,40956011,146412581, 524169045,1878990744,6743276222,24225861208, 87117117408,313552816720,1129460906243, 4071526431770,14687417557462,53016891233217, 191489301052386,692020548649474,2502200138127277, 9051895373199102,32761105883346693] |