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Search: id:A134703
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| 0, 1, 5, 27, 194, 1865, 22875, 342391, 6053444, 123456789
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OFFSET
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1,3
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COMMENT
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This numbers are isomorphic with diagonal unity permutational matrices of order n. Where diagonal matrices are a[i,i]=1 {i=1,n} a[i<>j]=0 and it's equivalent are identity permutations.
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CROSSREFS
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Cf. A134640, A134641, A134642, A134643, A134644, A134704.
Sequence in context: A082425 A109963 A091101 this_sequence A023811 A126119 A105631
Adjacent sequences: A134700 A134701 A134702 this_sequence A134704 A134705 A134706
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KEYWORD
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nonn
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AUTHOR
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Artur Jasinski (grafix(AT)csl.pl), Nov 07 2007, Nov 08 2007
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