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A229574 as a simple table

na(n)
16
280
3171
4312
5568
61064
72064
84120
98384
1017256
1135728
1274168
13154080
14320008
15664112
161376856
172851456
185898920
1912190416
2025166584
2151905312
22106955592
23220201840
24452985752
25931136448
261912603624
273925869584
288053064760

[6,80,171,312,568,1064,2064,4120,8384,17256,35728,
 74168,154080,320008,664112,1376856,2851456,
 5898920,12190416,25166584,51905312,106955592,
 220201840,452985752,931136448,1912603624,
 3925869584,8053064760]