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Search: id:A128987
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A128987 (n^3-n^2)*4^n. +0
1
0, 64, 1152, 12288, 102400, 737280, 4816896, 29360128, 169869312, 943718400, 5075107840, 26575110144, 136096776192, 683973541888, 3382286745600, 16492674416640, 79439715106816, 378506877861888, 1786156639322112 (list; graph; listen)
OFFSET

1,2

FORMULA

G.f.: 64x^2(1+2x)/(1-4x)^4. [From R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Dec 19 2008]

CROSSREFS

Cf. A128796; A036289.

Sequence in context: A016959 A000768 A081102 this_sequence A017031 A145218 A014794

Adjacent sequences: A128984 A128985 A128986 this_sequence A128988 A128989 A128990

KEYWORD

nonn

AUTHOR

Mohammad K. Azarian (azarian(AT)evansville.edu), Apr 30 2007

EXTENSIONS

Corrected the first offset. - Mohammad K. Azarian (azarian(AT)evansville.edu), Nov 20 2008

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


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