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A161591 as a simple table

na(n)
11
216
3239
43569
553296
6795871
711884769
8177475664
92650250191
1039576277201
11590993907824
128825332340159
13131788991194561
141968009535578256
1529388354042479279
16438857301101610929
176553471162481684656
1897863210136123658911
191461394680879373199009

[1,16,239,3569,53296,795871,11884769,177475664,
 2650250191,39576277201,590993907824,8825332340159,
 131788991194561,1968009535578256,
 29388354042479279,438857301101610929,
 6553471162481684656,97863210136123658911,
 1461394680879373199009]