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A177926
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a(n) = ((n-th-prime - 1)!)^2
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4
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1, 4, 576, 518400, 13168189440000, 229442532802560000, 437763136697395052544000000, 40990389067797283140009984000000, 1263377636044591724886240423994982400000000, 92956902680071188234494975268405495542386262016000000000000
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OFFSET
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1,2
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COMMENTS
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Except first three terms, sqrt(a(n)/400) is an integer, also sqrt(a(n+1/a(n)) is an integer. [From Giovanni Teofilatto, May 16 2010]
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LINKS
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MATHEMATICA
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CROSSREFS
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KEYWORD
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easy,nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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