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A113998 Reverse of triangle A051731. 5
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; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row sums are A000005. Diagonal sums are A001227 (?). Row k corresponds to A113999(k).

LINKS

Table of n, a(n) for n=1..105.

FORMULA

Sum_{k, 1<=k<=n} k*T(n,k)=A081307(n) - Philippe Deléham, Feb 03 2007

EXAMPLE

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;

CROSSREFS

Sequence in context: A174391 A343910 A329682 * A253084 A182741 A070909

Adjacent sequences: A113995 A113996 A113997 * A113999 A114000 A114001

KEYWORD

nonn,tabl

AUTHOR

Paul Barry, Nov 12 2005

STATUS

approved

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Last modified January 29 17:46 EST 2023. Contains 359924 sequences. (Running on oeis4.)