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A059523 as a simple table

na(n)
01
12
22
336
419020
52010231696
69219217412568364176
7170141181796805105960861096082778425120
857896044618658097536026644159052312977171804852352892309392604715987334365792

[1,2,2,36,19020,2010231696,9219217412568364176,
 170141181796805105960861096082778425120,
 57896044618658097536026644159052312977171804852352\
 892309392604715987334365792]