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Search: id:A090914
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| A090914 |
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Reciprocal of (n+1)! times determinant of n X n matrix whose (i,j)-th element is 1/(i+j). |
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1
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| 1, 1, 12, 1800, 3528000, 93350880000, 34157460395520000, 176018448722253096960000, 12957844528516872887046144000000, 13783997562964632581368087262085120000000
(list; graph; listen)
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OFFSET
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0,3
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MATHEMATICA
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Table[ 1 / Det[ Table[ 1 / (i + j), {i, 1, n}, {j, 1, n} ]]/(n + 1)!, {n, 1, 10}]
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PROGRAM
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(PARI) a(n)=if(n<0, 0, 1/((n+1)!*matdet(matrix(n, n, i, j, 1/(i+j)))))
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CROSSREFS
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A067689/(n+1)!
Sequence in context: A145186 A160304 A013479 this_sequence A049405 A049406 A104009
Adjacent sequences: A090911 A090912 A090913 this_sequence A090915 A090916 A090917
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KEYWORD
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nonn
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AUTHOR
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Robert G. Wilson v (rgwv(AT)rgwv.com), Feb 26 2004
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