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Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 3 |
| 3 | 105 |
| 4 | 4725 |
| 5 | 530145 |
| 6 | 45270225 |
| 7 | 12034447425 |
| 8 | 2116670180625 |
| 9 | 737902583042625 |
| 10 | 219604524727012425 |
| 11 | 137952599116097390625 |
| 12 | 49583382753435146240625 |
| 13 | 46991310794950147391390625 |
| 14 | 25508895927267586991297765625 |
| 15 | 24661803286201363305440202410625 |
[0,1,3,105,4725,530145,45270225,12034447425, 2116670180625,737902583042625,219604524727012425, 137952599116097390625,49583382753435146240625, 46991310794950147391390625, 25508895927267586991297765625, 24661803286201363305440202410625] |