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A131667 List of triples 2n, 1-2n, 0, n >= 1. +0
1
2, -1, 0, 4, -3, 0, 6, -5, 0, 8, -7, 0, 10, -9, 0, 12, -11, 0, 14, -13, 0, 16, -15, 0, 18, -17, 0, 20, -19, 0, 22, -21, 0, 24, -23, 0, 26, -25, 0, 28, -27, 0, 30, -29, 0, 32, -31, 0, 34, -33, 0, 36, -35, 0, 38, -37, 0, 40, -39, 0, 42, -41, 0, 44, -43, 0, 46, -45, 0, 48, -47, 0, 50, -49, 0 (list; graph; listen)
OFFSET

1,1

CROSSREFS

Sequence in context: A002349 A096794 A106375 this_sequence A086802 A092488 A068527

Adjacent sequences: A131664 A131665 A131666 this_sequence A131668 A131669 A131670

KEYWORD

sign

AUTHOR

Paul Curtz (bpcrtz(AT)free.fr), Sep 14 2007

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Last modified November 24 23:16 EST 2009. Contains 167481 sequences.


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