id:A158146 - OEIS Search Results

Search: id:A158146

Displaying 1-1 of 1 results found.

page 1

Number of nondecreasing integer sequences of length 12 with sum zero and sum of absolute values 2n.

+0
1

1, 4, 9, 25, 49, 121, 222, 466, 828, 1537, 2546, 4506, 7097, 11656, 17964, 28080, 41533, 62829, 90245, 131868, 185633, 262931, 361620, 502438, 677292, 919091, 1221175, 1627409, 2126641, 2793158, 3599216, 4655834, 5933603, 7571871, 9539554 (list; graph; listen)

	OFFSET	`1,2`
	COMMENT	`a(n) = A000041(n)^2 for n<=6` `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..474`
	CROSSREFS	`Sequence in context: A001248 A052043 A030146 this_sequence A158147 A158148 A158149` `Adjacent sequences: A158143 A158144 A158145 this_sequence A158147 A158148 A158149`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin (rhhardin(AT)att.net) Mar 13 2009`

page 1

Search completed in 0.002 seconds

Last modified December 5 23:38 EST 2009. Contains 170428 sequences.

AT&T Labs Research