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A123872 as a simple table

na(n)
02
16
226
3126
46251
562500001
66250000000000001
76250000000000000000000000000001
862500000000000000000000000000000000000000000000000000000000001

[2,6,26,126,6251,62500001,6250000000000001,
 6250000000000000000000000000001,
 62500000000000000000000000000000000000000000000000\
 000000000001]