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A229503 as a simple table

na(n)
10
26
3480
450112
59854784
64032737280
73594819388032
87178082866740800
932598674667546519744
10340101114114677727107520
118206049057729134245814363392

[0,6,480,50112,9854784,4032737280,3594819388032,
 7178082866740800,32598674667546519744,
 340101114114677727107520,
 8206049057729134245814363392]