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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 3 |
| 2 | 9 |
| 3 | 212 |
| 4 | 774 |
| 5 | 2986491 |
| 6 | 11962183 |
| 7 | 5866732236 |
| 8 | 24717532254 |
| 9 | 155049859325162 |
| 10 | 8766713183100126 |
| 11 | 1242400321151564076 |
| 12 | 157798597956508868 |
| 13 | 141417442289739551841 |
| 14 | 3032690837599386922473477 |
| 15 | 272243517649610491264579553148 |
| 16 | 1244664961615535298800024043306 |
[1,3,9,212,774,2986491,11962183,5866732236, 24717532254,155049859325162,8766713183100126, 1242400321151564076,157798597956508868, 141417442289739551841,3032690837599386922473477, 272243517649610491264579553148, 1244664961615535298800024043306] |