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0, 6, 60, 126, 120, 330, 16380, 42, 4080, 7182, 3300, 1518, 32760, 78, 12180, 214830, 8160, 102, 34545420, 114, 270600, 37926, 15180, 6486, 1113840, 1650, 41340, 21546, 24360, 10266, 1703601900, 186, 16320, 2135826, 1020, 164010, 5043631320, 222, 1140
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OFFSET
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0,2
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COMMENTS
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a(n+1) is a multiple of A040031(n+1), sequence of period 2: 6, 12.
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LINKS
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FORMULA
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EXAMPLE
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a(0)=0*1, a(1)=1*6, a(2)=2*30=60,, a(3)=3*42=126.
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PROG
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(PARI) a(n)=n*denominator(bernfrac(2*n))
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CROSSREFS
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KEYWORD
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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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