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A068249 as a simple table

na(n)
31
4123933504
5607054532700510
642295002762341131520
7221621606435023540827375
8227499908955471802467974016
976749558468512064584917217484
1011559255724071428199019433809920
11945121792213234612017996840421965
1247886238153764555711259823337784000

[1,123933504,607054532700510,42295002762341131520,
 221621606435023540827375,
 227499908955471802467974016,
 76749558468512064584917217484,
 11559255724071428199019433809920,
 945121792213234612017996840421965,
 47886238153764555711259823337784000]