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A197781 as a simple table

na(n)
19
21025
339748
41924263
588309448
64052348046
7186804530634
88622121723045
9397804283640646
1018336405515418246
11845373728575358353
1238986854903558638616
131797850629942273258934
1482902079988914118429426

[9,1025,39748,1924263,88309448,4052348046,
 186804530634,8622121723045,397804283640646,
 18336405515418246,845373728575358353,
 38986854903558638616,1797850629942273258934,
 82902079988914118429426]