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A241453 as a simple table

na(n)
01
11
21
36
4160
513125
62544696
7978839680
8662561095680
9724201891583625
101198933986250000000
112861518844725337212416
129468599329204035806822400
1342083045149004715366557171125
14244738882349978781346230604032000
151821980763196818488550000000000000000

[1,1,1,6,160,13125,2544696,978839680,662561095680,
 724201891583625,1198933986250000000,
 2861518844725337212416,9468599329204035806822400,
 42083045149004715366557171125,
 244738882349978781346230604032000,
 1821980763196818488550000000000000000]