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A193181 as a simple table

na(n)
12
210
310
4170
52210
681770
7408850
8408850
916762850
101693047850
11103275918850
122995001646650
132995001646650
14590015324390050
1566671731656075650
1617134635035611442050
1717134635035611442050
1817134635035611442050
193101368941445671011050

[2,10,10,170,2210,81770,408850,408850,16762850,
 1693047850,103275918850,2995001646650,
 2995001646650,590015324390050,66671731656075650,
 17134635035611442050,17134635035611442050,
 17134635035611442050,3101368941445671011050]