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A081040 as a simple table

na(n)
01
19
265
3425
42625
515625
690625
7515625
82890625
916015625
1087890625
11478515625
122587890625
1313916015625
1474462890625
15396728515625
162105712890625
1711138916015625
1858746337890625
19308990478515625
201621246337890625

[1,9,65,425,2625,15625,90625,515625,2890625,
 16015625,87890625,478515625,2587890625,
 13916015625,74462890625,396728515625,
 2105712890625,11138916015625,58746337890625,
 308990478515625,1621246337890625]