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A083957
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a(n) = product of all cyclic permutation of concatenation of first n numbers. In each case the digits of a number are kept together for n>9.
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1
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OFFSET
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1,2
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COMMENTS
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Initial terms are {n(n+1)/2}*{A000042(n)}.
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LINKS
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EXAMPLE
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a(1) = 1, a(2) = 12*21 = 252, a(3) = 123*231*312 = 8864856.
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CROSSREFS
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KEYWORD
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base,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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