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A121947 as a simple table

na(n)
1149
2198
31392
416041957
510000000009
6132324898229
7154879506575
814501949763339
915509886785307493
1016314428059046884
111589868655913263939

[149,198,1392,16041957,10000000009,132324898229,
 154879506575,14501949763339,15509886785307493,
 16314428059046884,1589868655913263939]