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Search: id:A090019
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A090019 (3*10^n+2*0^n)/5. +0
1
1, 6, 60, 600, 6000, 60000, 600000, 6000000, 60000000, 600000000, 6000000000, 60000000000, 600000000000, 6000000000000, 60000000000000, 600000000000000, 6000000000000000, 60000000000000000, 600000000000000000 (list; graph; listen)
OFFSET

0,2

COMMENT

Fifth column of triangle A067410

FORMULA

G.f.: (1-4x)/(1-10x); E.g.f. : (3exp(10x)+2)/5=exp(5x)(cosh(5x)+sinh(5x)/5).

CROSSREFS

Sequence in context: A136930 A136936 A136893 this_sequence A127642 A106259 A085364

Adjacent sequences: A090016 A090017 A090018 this_sequence A090020 A090021 A090022

KEYWORD

easy,nonn

AUTHOR

Paul Barry (pbarry(AT)wit.ie), Nov 20 2003

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Last modified December 17 13:29 EST 2009. Contains 170826 sequences.


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