id:A157064 - OEIS Search Results

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Number of integer sequences of length n+1 with sum zero and sum of absolute values 30

+0
1

2, 90, 2252, 39500, 535502, 5930022, 55599992, 452715672, 3262336002, 21114177018, 124188986196, 670283877588, 3346707628446, 15564971674518, 67830161708592, 278406848295312, 1081149205136382, 3988232552194662 (list; graph; listen)

	OFFSET	`1,1`
	FORMULA	`a(n)=T(n,15); 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: A041967 A024239 A076532 this_sequence A058527 A138583 A024240` `Adjacent sequences: A157061 A157062 A157063 this_sequence A157065 A157066 A157067`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin (rhhardin(AT)att.net) Feb 22 2009`

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Last modified December 8 08:31 EST 2009. Contains 170430 sequences.

AT&T Labs Research