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A156951 as a simple table

na(n)
01
11
21
31
44
51
61
752
852
91
101
112080
1227040
132080
141
151
16251680
17130873600
18130873600
19251680
201
211
2291611520
235764196838400
24230567873536000
255764196838400
2691611520
271
281
29100131391360
302293297240551116800
3111099558644267405312000
3211099558644267405312000
332293297240551116800
34100131391360
351

[1,1,1,1,4,1,1,52,52,1,1,2080,27040,2080,1,1,
 251680,130873600,130873600,251680,1,1,91611520,
 5764196838400,230567873536000,5764196838400,
 91611520,1,1,100131391360,2293297240551116800,
 11099558644267405312000,11099558644267405312000,
 2293297240551116800,100131391360,1]