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A250635 as a simple table

na(n)
1380
22347
312151
456232
5241742
6994030
73951204
815376595
958841311
10222800817
11836506982
123124145109
1311618627925
1443097606337
15159532886234
16589803541517
172178369414653
188040870052968
1929666788704784
20109426537156018

[380,2347,12151,56232,241742,994030,3951204,
 15376595,58841311,222800817,836506982,3124145109,
 11618627925,43097606337,159532886234,589803541517,
 2178369414653,8040870052968,29666788704784,
 109426537156018]