id:A158183 - OEIS Search Results

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Number of nondecreasing integer sequences of length 49 with sum zero and sum of absolute values 2n.

+0
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1, 4, 9, 25, 49, 121, 225, 484, 900, 1764, 3136, 5929, 10201, 18225, 30976, 53361, 88209, 148225, 240100, 393129, 627264, 1004004, 1575025, 2480625, 3833763, 5934088, 9060062, 13823385, 20838791, 31403601, 46809832, 69698234, 102863104 (list; graph; listen)

	OFFSET	`1,2`
	COMMENT	`a(n) = A000041(n)^2 for n<=24` `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..191`
	CROSSREFS	`Sequence in context: A158180 A158181 A158182 this_sequence A158184 A001255 A133019` `Adjacent sequences: A158180 A158181 A158182 this_sequence A158184 A158185 A158186`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin (rhhardin(AT)att.net) Mar 13 2009`

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Last modified December 10 12:37 EST 2009. Contains 170569 sequences.

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