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A005326 as a simple table

na(n)
11
21
33
44
528
616
7256
8324
93600
103600
11129744
1263504
133521232
143459600
1560891840
1691240704
178048712960
183554067456
19425476094976
20320265446400
2112474417291264
2216417666704384
232778580249611264
241142807773593600
25172593628397420544

[1,1,3,4,28,16,256,324,3600,3600,129744,63504,
 3521232,3459600,60891840,91240704,8048712960,
 3554067456,425476094976,320265446400,
 12474417291264,16417666704384,2778580249611264,
 1142807773593600,172593628397420544]