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A081784 as a simple table

na(n)
01
110
2122
333429
41447509608
53251816299888840778
610657606087425320549792856871886476385
71233698091085791193532165615536619532897409600456434390187369062304735077655

[1,10,122,33429,1447509608,3251816299888840778,
 10657606087425320549792856871886476385,
 12336980910857911935321656155366195328974096004564\
 34390187369062304735077655]