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Search: id:A127227
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| A127227 |
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a(n)= numerator of ((n + 3)! - (n - 3)!)/(n!). |
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+0
5
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| 719, 5039, 20159, 60479, 151199, 332639, 665279, 1235519, 2162159, 3603599, 5765759, 8910719, 13366079, 19535039, 27907199, 39070079, 53721359, 72681839, 96909119, 127511999, 165765599, 213127199, 271252799, 342014399, 427517999
(list; graph; listen)
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OFFSET
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3,1
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MATHEMATICA
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Table[Numerator[((n + 3)! - (n - 3)!)/(n!)], {n, 3, 30}]
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CROSSREFS
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Cf. A028387, A062938, A127228, A127229, A127230.
Sequence in context: A081425 A101797 A144767 this_sequence A139177 A064980 A101997
Adjacent sequences: A127224 A127225 A127226 this_sequence A127228 A127229 A127230
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KEYWORD
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nonn,frac
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AUTHOR
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Artur Jasinski (grafix(AT)csl.pl), Jan 09 2007
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