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A119974 Embed zeros in A119972; thereby creating a signed triangular matrix illustrating the pattern of negative values. 1
1, 2, -3, 4, 0, 5, 0, -6, 0, -7, 8, 0, 0, 0, 9, 0, 0, 10, 0, 0, -11, 0, -12, 0, 0, 0, 0, 13, 0, 0, 0, -14, 0, 0, 0, -15, 16, 0, 0, 0, 0, 0, 0, 0, 17, 0, 0, 0, 0, 18, 0, 0, 0, 0, -19, 0, 0, 20, 0, 0, 0, 0, 0, 0, 0, 21 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..66.

CROSSREFS

Cf. A119972.

Sequence in context: A199511 A049279 A126013 * A195828 A322981 A232749

Adjacent sequences:  A119971 A119972 A119973 * A119975 A119976 A119977

KEYWORD

easy,more,sign,tabl

AUTHOR

Alford Arnold, Jun 06 2006

STATUS

approved

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Last modified April 19 22:22 EDT 2019. Contains 322291 sequences. (Running on oeis4.)