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Search: id:A069643
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| A069643 |
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Let M_n be the n X n matrix with M_n(i,j)=1/(i+j+4); then a(n)=1/det(M_n). |
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| 6, 2352, 30481920, 9958443264000, 71274072206937600000, 10284003594061010227814400000, 28352758990854707972694688215859200000, 1439725057274629036644686315831322105348096000000
(list; graph; listen)
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OFFSET
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1,1
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PROGRAM
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(PARI) for(n=1, 10, print1(1/matdet(matrix(n, n, i, j, 1/(i+j+4))), ", "))
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CROSSREFS
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Adjacent sequences: A069640 A069641 A069642 this_sequence A069644 A069645 A069646
Sequence in context: A051113 A067174 A059203 this_sequence A067630 A097871 A001326
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KEYWORD
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easy,nonn
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AUTHOR
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Benoit Cloitre (benoit7848c(AT)orange.fr), Apr 21 2002
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