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A086852 as a simple table

na(n)
00
10
22
34
410
540
6230
71580
812434
9110320
101090270
1111876980
12141373610
131825321016
1425405388150
15379158271420
166039817462210
17102278890975360
181834691141852174
1934752142215026180
20693126840194499290
2114519428780464454600
22318705819455462421670

[0,0,2,4,10,40,230,1580,12434,110320,1090270,
 11876980,141373610,1825321016,25405388150,
 379158271420,6039817462210,102278890975360,
 1834691141852174,34752142215026180,
 693126840194499290,14519428780464454600,
 318705819455462421670]