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A209155 Triangle read by rows:  numerators of Stirling-like triangle of rational numbers. 1
-1, -1, 1, -1, 3, -1, -1, 1, -2, 1, -1, 5, -5, 5, -1, -1, 1, -5, 5, -3, 1, -1, 7, -7, 35, -7, 7, -1, -1, 4, -28, 7, -14, 14, -4, 1 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,5

LINKS

Table of n, a(n) for n=1..36.

Joseph M. Santmyer, A Stirling like sequence of rational numbers, Discrete Math. 171 (1997), no. 1-3, 229-235. MR1454453.

EXAMPLE

Triangle begins:

-1,

-1,1,

-1,3/2,-1,

-1,1,-2,1,

-1,5,-5/3,5/2,-1,

-1,1,-5,5/2,-3,1,

-1,7,-7/3,35/4,-7/2,7/2,-1,

-1,4,-28/3,7/3,-14,14/3,-4,1,...

CROSSREFS

Cf. A209156.

Sequence in context: A030369 A298667 A226166 * A082062 A030370 A100808

Adjacent sequences:  A209152 A209153 A209154 * A209156 A209157 A209158

KEYWORD

sign,frac,tabl,more

AUTHOR

N. J. A. Sloane, Mar 05 2012

STATUS

approved

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Last modified April 6 18:42 EDT 2020. Contains 333286 sequences. (Running on oeis4.)