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A128418 as a simple table

na(n)
01
15
233
3233
41697
512585
694449
7714873
85445441
941687369
10320420753
112471008281
1219108837601
13148123058153
141150532419377
158952614975673
1669772391628417
17544532315255433
184255064364533457
1933287174505889113
20260669265451935777
212043172307192457513
2216028314647309873777

[1,5,33,233,1697,12585,94449,714873,5445441,
 41687369,320420753,2471008281,19108837601,
 148123058153,1150532419377,8952614975673,
 69772391628417,544532315255433,4255064364533457,
 33287174505889113,260669265451935777,
 2043172307192457513,16028314647309873777]