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A176097 as a simple table

na(n)
01
14
236
3272
42150
516992
6134848
71072192
88536914
968036600
10542607560
114329671040
1234561892560
13275979195520
142204266118400
1517609217372416
16140698273234634
171124340854572296
188985828520591912
1971822662173752800

[1,4,36,272,2150,16992,134848,1072192,8536914,
 68036600,542607560,4329671040,34561892560,
 275979195520,2204266118400,17609217372416,
 140698273234634,1124340854572296,8985828520591912,
 71822662173752800]