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A177599 as a simple table

na(n)
01
11
220
31680
4347279
5145417911
6108103451700
7130235191847880
8237916352264650149
9626620767478218488341
102286998940761680215812180
1111203494211631147331264432480
1271758642346800717617629677669619
13587889139521679290927189491977855371

[1,1,20,1680,347279,145417911,108103451700,
 130235191847880,237916352264650149,
 626620767478218488341,2286998940761680215812180,
 11203494211631147331264432480,
 71758642346800717617629677669619,
 587889139521679290927189491977855371]