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A367944 as a simple table

na(n)
01
16
227216
31344924798336
43605580335899213007486976
51648055031941075082958467426002632704000000
6312704667066499295437237787452750428210311485710262201221120000000

[1,6,27216,1344924798336,
 3605580335899213007486976,
 1648055031941075082958467426002632704000000,
 31270466706649929543723778745275042821031148571026\
 2201221120000000]