id:A158143 - OEIS Search Results

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Number of nondecreasing integer sequences of length 9 with sum zero and sum of absolute values 2n.

+0
1

1, 4, 9, 25, 48, 113, 189, 367, 598, 1031, 1559, 2566, 3681, 5593, 7926, 11480, 15598, 21984, 29080, 39672, 51688, 68384, 87284, 113869, 142723, 181944, 225921, 283427, 346610, 430023, 519663, 635875, 762786, 921749, 1094895, 1313500, 1545683 (list; graph; listen)

	OFFSET	`1,2`
	COMMENT	`a(n) = A000041(n)^2 for n<=4` `a(n) = A000041(n)^2 - cumulative A000712(2n-1-length), 0 <= 2n-1-length <= floor(n/2) [empirical].`
	LINKS	`Ron Hardin, Table of n, a(n) for n=1..643`
	CROSSREFS	`Sequence in context: A130448 A046451 A158142 this_sequence A082200 A063482 A069557` `Adjacent sequences: A158140 A158141 A158142 this_sequence A158144 A158145 A158146`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin (rhhardin(AT)att.net) Mar 13 2009`

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Last modified December 20 00:58 EST 2009. Contains 171054 sequences.

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