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A012237 as a simple table

na(n)
01
12
232
31168
480768
58855296
61420471296
7312821661696
890619729117184
933397289918332928
1015260151754256547840
118466388564521610903552
125606464118961336397856768
134368144479139164180218642432

[1,2,32,1168,80768,8855296,1420471296,
 312821661696,90619729117184,33397289918332928,
 15260151754256547840,8466388564521610903552,
 5606464118961336397856768,
 4368144479139164180218642432]