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A013315 as a simple table

na(n)
10
21
32
42
512
672
7272
8968
95488
1036144
11204512
121135840
137577856
1456287168
15406104064
162933384704
1723084016896
18194919700480
191664627753984
2014417113925632
21131148402111488
221251412558922752
2312211894620549120

[0,1,2,2,12,72,272,968,5488,36144,204512,1135840,
 7577856,56287168,406104064,2933384704,23084016896,
 194919700480,1664627753984,14417113925632,
 131148402111488,1251412558922752,
 12211894620549120]