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A207263 as a simple table

na(n)
12
216
382
4611
55904
645520
7467686
84556171
948655983
10567847595
116351729691
1280023297510
131005050679531
1412834603243934
15174354454607454
162353308940308585
1732870079608035300
18470039857440029540

[2,16,82,611,5904,45520,467686,4556171,48655983,
 567847595,6351729691,80023297510,1005050679531,
 12834603243934,174354454607454,2353308940308585,
 32870079608035300,470039857440029540]