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A270124 as a simple table

na(n)
02
116
23600
34354563600
430582275103386435842563600
58210597206238423089030527211173884373017314096293353169731842563600

[2,16,3600,4354563600,30582275103386435842563600,
 82105972062384230890305272111738843730173140962933\
 53169731842563600]