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A219983 as a simple table

na(n)
121
22199
3131978
47542829
5441412699
625862914118
71513751822570
888598966974708
95185871091616559
10303538715007889396
1117766656713730059860
121039913922040638093334
1360868009800206579292733

[21,2199,131978,7542829,441412699,25862914118,
 1513751822570,88598966974708,5185871091616559,
 303538715007889396,17766656713730059860,
 1039913922040638093334,60868009800206579292733]