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Search: id:A071999
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| A071999 |
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Determinant of n X n matrix whose element A(i,j) is 1 if i=j, i or j if n=i+j and 0 otherwise. |
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+0
1
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| 1, 1, -1, -2, 15, 28, -495, -924, 29393, 55200, -2755377, -5206760, 374909535, 712318464, -69864169375, -133355433456, 17088978269025, 32747341496320, -5311777786094241, -10212994682100000, 2045230826019387119, 3943711514611814400, -955583772509043759375
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OFFSET
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1,4
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MATHEMATICA
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Table[ Det[ Table[ If[i == j, 1, If[n == j + i, i, 0]], {i, 1, n}, {j, 1, n}]], {n, 1, 22}]
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CROSSREFS
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Adjacent sequences: A071996 A071997 A071998 this_sequence A072000 A072001 A072002
Sequence in context: A075312 A128828 A032002 this_sequence A031289 A093917 A076352
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KEYWORD
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sign
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AUTHOR
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Robert G. Wilson v (rgwv(AT)rgwv.com), Jun 19 2002
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