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A019050 as a simple table

na(n)
23
36
420
5132
6938
75733
834331
9217843
101415657
119240592
1261276873
13413691585
142827480062
1519490660020
16135319158941

[3,6,20,132,938,5733,34331,217843,1415657,9240592,
 61276873,413691585,2827480062,19490660020,
 135319158941]