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A125145 as a simple table

na(n)
01
14
215
357
4216
5819
63105
711772
844631
9169209
10641520
112432187
129221121
1334959924
14132543135
15502509177
161905156936
177222998339
1827384465825
19103822392492
20393620574951
211492328902329
225657848431840
2321450532002507

[1,4,15,57,216,819,3105,11772,44631,169209,641520,
 2432187,9221121,34959924,132543135,502509177,
 1905156936,7222998339,27384465825,103822392492,
 393620574951,1492328902329,5657848431840,
 21450532002507]