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A176710 as a simple table

na(n)
01
12
212
324
4144
5288
61728
73456
820736
941472
10248832
11497664
122985984
135971968
1435831808
1571663616
16429981696
17859963392
185159780352
1910319560704
2061917364224
21123834728448
22743008370688
231486016741376
248916100448256
2517832200896512
26106993205379072
27213986410758144

[1,2,12,24,144,288,1728,3456,20736,41472,248832,
 497664,2985984,5971968,35831808,71663616,
 429981696,859963392,5159780352,10319560704,
 61917364224,123834728448,743008370688,
 1486016741376,8916100448256,17832200896512,
 106993205379072,213986410758144]