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Search: id:A131777
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| 1, 5, 1, 1, 5, 1, 5, -3, 10, 1, 1, 5, 3, 10, 1, 5, -7, 20, -1, 15, 1, 1, 5, 1, 20, 10, 15, 1, 5, -11, 30, -15, 50, 6, 20, 1, 1, 5, -5, 30, 15, 50, 22, 20, 1, 5, -15, 40, -45, 105, -9, 100, 18, 25, 1
(list; table; graph; listen)
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OFFSET
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1,2
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COMMENT
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Row sums = A022096(n-1).
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FORMULA
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5*A065941 - 4*A049310 as infinite lower triangular matrices.
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EXAMPLE
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First few rows of the triangle are:
1;
5, 1
1, 5, 1;
5, -3, 10, 1;
1, 5, 3, 10, 1;
5, -7, 20, -1, 15, 1;
1, 5, 1, 20, 10, 15, 1;
...
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CROSSREFS
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Cf. A131774, A131775, A131776, A065941, A049310, A022096.
Sequence in context: A071170 A108691 A010333 this_sequence A046607 A152717 A071856
Adjacent sequences: A131774 A131775 A131776 this_sequence A131778 A131779 A131780
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KEYWORD
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tabl,sign
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AUTHOR
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Gary W. Adamson (qntmpkt(AT)yahoo.com), Jul 14 2007
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EXTENSIONS
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Corrected A-number in row sums reference R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jun 16 2009
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