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A157065 Number of integer sequences of length n+1 with sum zero and sum of absolute values 32 0
2, 96, 2562, 47920, 692610, 8174544, 81659522, 708113304, 5431848930, 37403270520, 233931828834, 1341750437352, 7114703302434, 35117045235720, 162298598439330, 705951252118284, 2903050518427962, 11331495633292524 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

FORMULA

a(n)=T(n,16); 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: A137322 A158980 A069121 * A123115 A119696 A064069

Adjacent sequences:  A157062 A157063 A157064 * A157066 A157067 A157068

KEYWORD

nonn

AUTHOR

R. H. Hardin (rhhardin(AT)att.net) Feb 22 2009

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Last modified February 14 05:35 EST 2012. Contains 205570 sequences.