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A230861 Triangle read by rows: coefficients of generating functions U_{1324567,n}(y). 0
-1, -1, 1, -1, 2, -1, -1, 3, -3, 1, -1, 4, -6, 4, -1, -1, 5, -10, 10, -5, 1, -1, 7, -15, 20, -15, 6, -1, -1, 9, -23, 35, -35, 21, -7, 1, -1, 11, -34, 59, -70, 56, -28, 8, -1, -1, 13, -48, 96, -130, 126, -84, 36, -9, 1, -1, 15, -65, 150, -230, 257, -210, 120, -45, 10, -1 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,5

COMMENTS

See Jones and Remmel for precise definition.

LINKS

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

Miles Eli Jones, Jeffrey B. Remmel, A reciprocity method for computing generating functions over the set of permutations with no consecutive occurrence of tau arXiv:1201.0142 [math.CO], 2011.

Miles Eli Jones, Jeffrey B. Remmel, A reciprocity method for computing generating functions over the set of permutations with no consecutive occurrence of a permutation pattern, Discrete Math. 313 (2013), no. 23, 2712--2729. MR3106443.

EXAMPLE

Triangle begins:

-1,

-1,1,

-1,2,-1,

-1,3,-3,1,

-1,4,-6,4,-1,

-1,5,-10,10,-5,1,

-1,7,-15,20,-15,6,-1,

-1,9,-23,35,-35,21,-7,1,

-1,11,-34,59,-70,56,-28,8,-1,

-1,13,-48,96,-130,126,-84,36,-9,1,

-1,15,-65,150,-230,257,-210,120,-45,10,-1,

...

CROSSREFS

Sequence in context: A329052 A076831 A197061 * A119724 A162424 A302998

Adjacent sequences:  A230858 A230859 A230860 * A230862 A230863 A230864

KEYWORD

sign,tabl

AUTHOR

N. J. A. Sloane, Oct 31 2013

STATUS

approved

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Last modified January 29 08:09 EST 2020. Contains 331337 sequences. (Running on oeis4.)