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Search: id:A069641
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| A069641 |
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Let M_n be the n X n matrix with M_n(i,j)=1/(i+j+2); then a(n)=1/det(M_n). |
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| 4, 600, 2116800, 149361408000, 195185487974400000, 4526188681429365350400000, 1814098233992362204186460160000000, 12350461816416310792905806186828267520000000
(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+2))), ", "))
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CROSSREFS
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Sequence in context: A102204 A086143 A123657 this_sequence A079103 A067171 A091288
Adjacent sequences: A069638 A069639 A069640 this_sequence A069642 A069643 A069644
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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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