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A012249 as a simple table

na(n)
11
22
35
424
5154
61280
713005
8156800
92189726
1034793472
11620169186
1212259602432
13266267950740
146304157663232
15161624247752253
164461403146190848
17131936409635518774
184161949856324648960
19139508340802911502422
204952126960969786064896

[1,2,5,24,154,1280,13005,156800,2189726,34793472,
 620169186,12259602432,266267950740,6304157663232,
 161624247752253,4461403146190848,
 131936409635518774,4161949856324648960,
 139508340802911502422,4952126960969786064896]