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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 6 |
| 2 | 72 |
| 3 | 582 |
| 4 | 4032 |
| 5 | 25566 |
| 6 | 153528 |
| 7 | 886926 |
| 8 | 4983456 |
| 9 | 27401502 |
| 10 | 148157880 |
| 11 | 790096950 |
| 12 | 4166321184 |
| 13 | 21760624254 |
| 14 | 112743796632 |
| 15 | 580052260230 |
| 16 | 2966294589312 |
| 17 | 15087996161382 |
| 18 | 76384144381272 |
| 19 | 385066579325550 |
| 20 | 1933885653380544 |
| 21 | 9679153967272734 |
| 22 | 48295148145655224 |
| 23 | 240292643254616694 |
| 24 | 1192504522283625600 |
| 25 | 5904015201226909614 |
| 26 | 29166829902019914840 |
| 27 | 143797743705453990030 |
| 28 | 707626784073985438752 |
| 29 | 3476154136334368955958 |
| 30 | 17048697241184582716248 |
| 31 | 83487969681726067169454 |
| 32 | 408264709609407519880320 |
| 33 | 1993794711631386183977574 |
| 34 | 9724709261537887936102872 |
| 35 | 47376158929939177384568598 |
| 36 | 230547785968352575619933376 |
[0,6,72,582,4032,25566,153528,886926,4983456, 27401502,148157880,790096950,4166321184, 21760624254,112743796632,580052260230, 2966294589312,15087996161382,76384144381272, 385066579325550,1933885653380544,9679153967272734, 48295148145655224,240292643254616694, 1192504522283625600,5904015201226909614, 29166829902019914840,143797743705453990030, 707626784073985438752,3476154136334368955958, 17048697241184582716248,83487969681726067169454, 408264709609407519880320, 1993794711631386183977574, 9724709261537887936102872, 47376158929939177384568598, 230547785968352575619933376] |