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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 7 |
| 4 | 24 |
| 5 | 12 |
| 6 | 52 |
| 7 | 24 |
| 8 | 39 |
| 9 | 252 |
| 10 | 112 |
| 11 | 371 |
| 12 | 184 |
| 13 | 5772 |
| 14 | 44649 |
| 15 | 61939 |
| 16 | 151505 |
| 17 | 64125 |
| 18 | 533040 |
| 19 | 407635 |
| 20 | 273249 |
| 21 | 3901012 |
| 22 | 718187 |
| 23 | 3527063 |
| 24 | 9522163 |
| 25 | 23128315 |
| 26 | 20121642 |
| 27 | 337342290 |
| 28 | 388787370 |
[1,1,7,24,12,52,24,39,252,112,371,184,5772,44649, 61939,151505,64125,533040,407635,273249,3901012, 718187,3527063,9522163,23128315,20121642, 337342290,388787370] |