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A261125 as a simple table

na(n)
01
11
22
348
41935360
540493130637639680000
610654991354747516157752604498631700563938508800000000000

[1,1,2,48,1935360,40493130637639680000,
 10654991354747516157752604498631700563938508800000\
 000000]