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A370699 as a simple table

na(n)
01
11
22
35
420
5100
6610
74270
834160
9307160
103071600
1133787600
12405466600
135271065800
1473794921200
151106922416600
1617710758665600
17301082897315200
185419492342264000
19102970354503016000
202059407090060320000
2143247548855054544000
22951446074811199968000

[1,1,2,5,20,100,610,4270,34160,307160,3071600,
 33787600,405466600,5271065800,73794921200,
 1106922416600,17710758665600,301082897315200,
 5419492342264000,102970354503016000,
 2059407090060320000,43247548855054544000,
 951446074811199968000]