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A073404 as a simple table

na(n)
02
112
236
396
4672
51056
6864
710752
840416
943968
108064
11156672
121051776
132815488
142396160
1576032
162121984
1722125312
18105981696
19226492416
20161879040
21718848
2227205632
23404656128
242995605504

[2,12,36,96,672,1056,864,10752,40416,43968,8064,
 156672,1051776,2815488,2396160,76032,2121984,
 22125312,105981696,226492416,161879040,718848,
 27205632,404656128,2995605504]