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A060776 as a simple table

na(n)
11
21
32
44
510
624
770
8192
9576
101890
116300
1221600
1378848
14294840
151143072
164572288
1718849600
1879968000
19348566400
201559376000
217147140000
2233522128640
23160758097500
24787652812800
253938264064000
2620080974513600
27104348440350000
28552160113120000

[1,1,2,4,10,24,70,192,576,1890,6300,21600,78848,
 294840,1143072,4572288,18849600,79968000,
 348566400,1559376000,7147140000,33522128640,
 160758097500,787652812800,3938264064000,
 20080974513600,104348440350000,552160113120000]