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A216839 as a simple table

na(n)
01
11
22
39
464
5515
66126
787332
81408352
928357821
10656029450
1116616305354
12486491747952
1316101080888763
14572203757798414
1522348109637703800
16973262507935361632
1745353465796372720729
182238286744709428606866
19120361307277708751011502

[1,1,2,9,64,515,6126,87332,1408352,28357821,
 656029450,16616305354,486491747952,16101080888763,
 572203757798414,22348109637703800,
 973262507935361632,45353465796372720729,
 2238286744709428606866,120361307277708751011502]