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A171215 as a simple table

na(n)
11
29
328
473
5251
6954
73431
812617
948142
10184509
11710755
122768410
1310857575
1442779655
15169411778
16673898825
172690398105
1810776264120
1943294049155
20174399508573
21704214759836
222849828137869
2311555835845903
2446943852758298

[1,9,28,73,251,954,3431,12617,48142,184509,710755,
 2768410,10857575,42779655,169411778,673898825,
 2690398105,10776264120,43294049155,174399508573,
 704214759836,2849828137869,11555835845903,
 46943852758298]