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Search: id:A152904
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A152904 Triangle read by rows: T(n,k) = A008683(n-k+1); 1<=k<=n; mu(n) "decrescendo". +0
1
1, -1, 1, -1, -1, 1, 0, -1, -1, 1, -1, 0, -1, -1, 1, 1, -1, 0, -1, -1, 1, -1, 1, -1, 0, -1, -1, 1, 0, -1, 1, -1, 0, -1, -1, 1, 0, 0, -1, 1, -1, 0, -1, -1, 1, 1, 0, 0, -1, 1, -1, 0, -1, -1, 1, -1, 1, 0, 0, -1, 1, -1, 0, -1, -1, 1 (list; table; graph; listen)
OFFSET

1,1

COMMENT

Row sums = A002321, the Mertens function.

FORMULA

Triangle read by rows, T(n,k) = A008683(n-k+1) = A008683 in every column = A008683 "decrescendo"d by rows.

EXAMPLE

1;

-1, 1;

-1, -1, 1;

0, -1, -1, 1;

-1, 0, -1, -1, 1;

1, -1, 0, -1, -1, 1;

-1, 1, -1, 0, -1, -1, 1;

0, -1, 1, -1, 0, -1, -1, 1;

0, 0, -1, 1, -1, 0, -1, -1, 1;

...

CROSSREFS

Cf. A008683, A002321, A152901, A152902

Sequence in context: A070950 A141679 A071027 this_sequence A118102 A089509 A157972

Adjacent sequences: A152901 A152902 A152903 this_sequence A152905 A152906 A152907

KEYWORD

tabl,sign

AUTHOR

Gary W. Adamson (qntmpkt(AT)yahoo.com), Dec 14 2008

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Last modified December 15 00:47 EST 2009. Contains 170825 sequences.


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