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A113071 as a simple table

na(n)
01
18
240
3168
4648
52376
68424
729160
899144
9332424
101102248
113621672
1211809800
1338263752
14123294312
15395392104
161262703816
174017693960
1812741829416
1940291730856
20127073920392
21399817944648
221255242384360
233933092804328

[1,8,40,168,648,2376,8424,29160,99144,332424,
 1102248,3621672,11809800,38263752,123294312,
 395392104,1262703816,4017693960,12741829416,
 40291730856,127073920392,399817944648,
 1255242384360,3933092804328]