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A176662 as a simple table

na(n)
02
17
214
340
4104
5256
6608
71408
83200
97168
1015872
1134816
1275776
13163840
14352256
15753664
161605632
173407872
187208960
1915204352
2031981568
2167108864
22140509184
23293601280
24612368384
251275068416
262650800128
275502926848
2811408506880
2923622320128
3048855252992

[2,7,14,40,104,256,608,1408,3200,7168,15872,34816,
 75776,163840,352256,753664,1605632,3407872,
 7208960,15204352,31981568,67108864,140509184,
 293601280,612368384,1275068416,2650800128,
 5502926848,11408506880,23622320128,48855252992]