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Search: id:A118971
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A118971 4*binomial(5n+3,n)/(4n+4). +0
5
1, 4, 26, 204, 1771, 16380, 158224, 1577532, 16112057, 167710664, 1772645420, 18974357220, 205263418941, 2240623268512, 24648785802336, 272994644359580, 3041495503591365, 34064252968167180, 383302465665133014 (list; graph; listen)
OFFSET

0,2

COMMENT

A quadrisection of A118968.

FORMULA

G.f.: If the inverse series of y*(1-y)^4 is G(x) then A(x)=G(x)/x.

CROSSREFS

Cf. A006632, A130564 (members of the same family).

Sequence in context: A114496 A127086 A141381 this_sequence A124554 A164101 A048351

Adjacent sequences: A118968 A118969 A118970 this_sequence A118972 A118973 A118974

KEYWORD

easy,nonn

AUTHOR

Paul Barry (pbarry(AT)wit.ie), May 07 2006

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Last modified November 24 23:16 EST 2009. Contains 167481 sequences.


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