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A176621 as a simple table

na(n)
02
13
24
311
440
5157
6656
72721
811346
947337
10197398
11823451
123434718
1314326815
1459760224
15249271079
161039759044
174337038713
1818090636780
1975459593981
20314756746798
211312912064069
225476413466674
2322843193551799
2495283436047290

[2,3,4,11,40,157,656,2721,11346,47337,197398,
 823451,3434718,14326815,59760224,249271079,
 1039759044,4337038713,18090636780,75459593981,
 314756746798,1312912064069,5476413466674,
 22843193551799,95283436047290]