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A323263 as a simple table

na(n)
10
20
31
43
512
649
7197
8802
93251
1013199
1153558
12217359
13882077
143579664
1514526997
1658953567
17239245700
18970908389
193940146321
2015989925914
2164890414991
22263338678635
231068682634486
244336934396651
2517600173665641
2671425132301280
27289857908288985
281176303134354955
294773680566664252
3019372579641254793
3178617921060228045

[0,0,1,3,12,49,197,802,3251,13199,53558,217359,
 882077,3579664,14526997,58953567,239245700,
 970908389,3940146321,15989925914,64890414991,
 263338678635,1068682634486,4336934396651,
 17600173665641,71425132301280,289857908288985,
 1176303134354955,4773680566664252,
 19372579641254793,78617921060228045]