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Search: id:A138057
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A138057 Triangle read by rows: row n consists of 0 followed by n (n+1)'s with alternating signs. +0
5
0, 0, -2, 0, -3, 3, 0, -4, 4, -4, 0, -5, 5, -5, 5, 0, -6, 6, -6, 6, -6, 0, -7, 7, -7, 7, -7, 7, 0, -8, 8, -8, 8, -8, 8, -8, 0, -9, 9, -9, 9, -9, 9, -9, 9, 0, -10, 10, -10, 10, -10, 10, -10, 10, -10 (list; table; graph; listen)
OFFSET

0,3
FORMULA

Cf. A131738.

CROSSREFS

Adjacent sequences: A138054 A138055 A138056 this_sequence A138058 A138059 A138060

Sequence in context: A088276 A099838 A127449 this_sequence A053727 A127952 A134409

KEYWORD

tabl,sign

AUTHOR

Paul Curtz (bpcrtz(AT)free.fr), May 02 2008

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Last modified October 11 13:47 EDT 2008. Contains 144830 sequences.

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