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Search: id:A131121
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| 1, 1, 1, 1, 2, 2, 12, 12, 12, 12, 120, 120, 1440, 1440, 10080, 30240, 60480, 60480, 120960, 120960, 2419200, 7257600, 79833600, 79833600, 479001600, 479001600, 12454041600, 12454041600, 174356582400, 174356582400, 5230697472000
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OFFSET
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1,5
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MAPLE
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A131120 := proc(n) option remember ; if n = 1 then 1; else (n-1)!/lcm(seq(A131120(i), i=1..n-1)) ; fi ; end: A131121 := proc(n) A131120(n+1)/n ; end: seq(A131121(n), n=1..40) ; - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Oct 17 2007
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CROSSREFS
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Cf. A131120.
Sequence in context: A096855 A024538 A109767 this_sequence A055772 A025527 A092144
Adjacent sequences: A131118 A131119 A131120 this_sequence A131122 A131123 A131124
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KEYWORD
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nonn
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AUTHOR
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Leroy Quet (q1qq2qqq3qqqq(AT)yahoo.com), Jun 15 2007
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EXTENSIONS
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More terms from R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Oct 17 2007
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