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A235857 as a simple table

na(n)
01
12
212
31536
4519045120
5156130677884314787512320
612538151702000091464104493325082133822247601116646227522355200

[1,2,12,1536,519045120,156130677884314787512320,
 12538151702000091464104493325082133822247601116646\
 227522355200]