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A068278 as a simple table

na(n)
11
2810
343047450
4150104969072730
534342194186546625610730
6515520974797472540384088260118570
7507750044609844563320250272016778947097815370
832812470510724769634930013386228840033573943730279978702970

[1,810,43047450,150104969072730,
 34342194186546625610730,
 515520974797472540384088260118570,
 507750044609844563320250272016778947097815370,
 32812470510724769634930013386228840033573943730279\
 978702970]