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Search: id:A083325
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A083325 An alternating sum of decreasing powers. +0
2
1, 4, 18, 88, 450, 2344, 12258, 63928, 331650, 1710664, 8776098, 44810968, 227894850, 1155188584, 5839863138, 29458185208, 148335970050, 745888724104, 3746365209378, 18799770682648, 94271406797250, 472449572045224 (list; graph; listen)
OFFSET

0,2

COMMENT

Binomial transform of A083324

FORMULA

a(n)=5^n-4^n+3^n G.f. (1-8x+17x^2)/((1-3x)(1-4x)(1-5x)) E.g.f. exp(5x)-exp(4x)+exp(3x)

CROSSREFS

Sequence in context: A082685 A111966 A130524 this_sequence A050146 A083879 A081671

Adjacent sequences: A083322 A083323 A083324 this_sequence A083326 A083327 A083328

KEYWORD

easy,nonn

AUTHOR

Paul Barry (pbarry(AT)wit.ie), Apr 27 2003

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Last modified August 19 23:53 EDT 2008. Contains 142930 sequences.


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