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A324971 as a simple table

na(n)
10
20
30
40
50
61
74
812
931
1079
11192
12459
131082
142537
155922
1613816
1732222
1875254
19176034
20412667
21969531
222283278

[0,0,0,0,0,1,4,12,31,79,192,459,1082,2537,5922,
 13816,32222,75254,176034,412667,969531,2283278]