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Search: id:A069644
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| A069644 |
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Let M_n be the n X n matrix with M_n(i,j)=1/(i+j+5); then a(n)=1/det(M_n). |
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1
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| 7, 4032, 89812800, 56510213760000, 849349360466006400000, 275486641731816152769331200000, 1803836893978771496626439330581708800000
(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+5))), ", "))
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CROSSREFS
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Sequence in context: A052496 A088549 A024100 this_sequence A145696 A103856 A095155
Adjacent sequences: A069641 A069642 A069643 this_sequence A069645 A069646 A069647
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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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