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A055556 as a simple table

na(n)
14
272
358800
41757711340
554169994838960
6950645196424756293060600
794630125612279498512066506747436400
814119054639791549212725337736060964803166626000

[4,72,58800,1757711340,54169994838960,
 950645196424756293060600,
 94630125612279498512066506747436400,
 14119054639791549212725337736060964803166626000]