id:A157069 - OEIS Search Results

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Number of integer sequences of length n+1 with sum zero and sum of absolute values 40

+0
1

2, 120, 4002, 93500, 1687002, 24836196, 309182762, 3337508646, 31830097752, 272125000774, 2109875558208, 14977318285254, 98118326104708, 597217934730774, 3397036441760412, 18148572883826236, 91470993083858322 (list; graph; listen)

	OFFSET	`1,1`
	FORMULA	`a(n)=T(n,20); T(n,k)=sum({i=1..n}binomial(n+1,i)binomial(k-1,i-1)binomial(n-i+k,k))`
	CROSSREFS	`A103881 A156554` `Sequence in context: A153658 A073785 A102355 this_sequence A077540 A024343 A100043` `Adjacent sequences: A157066 A157067 A157068 this_sequence A157070 A157071 A157072`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin (rhhardin(AT)att.net) Feb 22 2009`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

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