id:A158184 - OEIS Search Results

Search: id:A158184

Displaying 1-1 of 1 results found.

page 1

Number of nondecreasing integer sequences of length 50 with sum zero and sum of absolute values 2n.

+0
1

1, 4, 9, 25, 49, 121, 225, 484, 900, 1764, 3136, 5929, 10201, 18225, 30976, 53361, 88209, 148225, 240100, 393129, 627264, 1004004, 1575025, 2480625, 3833764, 5934093, 9060082, 13823450, 20838976, 31404082, 46810997, 69700899, 102868926 (list; graph; listen)

	OFFSET	`1,2`
	COMMENT	`a(n) = A000041(n)^2 for n<=25` `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: A158181 A158182 A158183 this_sequence A001255 A133019 A028866` `Adjacent sequences: A158181 A158182 A158183 this_sequence A158185 A158186 A158187`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin (rhhardin(AT)att.net) Mar 13 2009`

page 1

Search completed in 0.002 seconds

Last modified November 25 14:49 EST 2009. Contains 167514 sequences.

AT&T Labs Research