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A113998
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Reverse of triangle A051731.
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2
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1, 1, 1, 1, 0, 1, 1, 0, 1, 1, 1, 0, 0, 0, 1, 1, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 1, 0, 1, 1, 1, 0, 0, 0, 0, 0, 1, 0, 1, 1, 0, 0, 0, 0, 1, 0, 0, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 1, 0, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 1
(list;
table;
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refs;
listen;
history;
text;
internal format)
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OFFSET
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1,1
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COMMENTS
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Row sums are A000005. Diagonal sums are A001227 (?). Row k corresponds to A113999(k).
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LINKS
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Table of n, a(n) for n=1..105.
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FORMULA
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Sum_{k, 1<=k<=n} k*T(n,k)=A081307(n) - Philippe DELEHAM, Feb 03 2007
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EXAMPLE
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Triangle begins
1;
1,1;
1,0,1;
1,0,1,1;
1,0,0,0,1;
1,0,0,1,1,1;
1,0,0,0,0,0,1;
1,0,0,0,1,0,1,1;
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CROSSREFS
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Sequence in context: A114000 A131218 A174391 * A070909 A115954 A115526
Adjacent sequences: A113995 A113996 A113997 * A113999 A114000 A114001
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KEYWORD
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nonn,tabl
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AUTHOR
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Paul Barry, Nov 12 2005
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STATUS
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approved
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