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Search: id:A069054
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A069054 a(1)=0 a(2)=1 a(n)=concatenate(a(n-1)a(n-2)...a(1))-a(n-1). +0
1
0, 1, 9, 901, 901009, 901009000901, 901009000901000000901009, 901009000901000000901009000000000000901009000901, 901009000901000000901009000000000000901009000901000000000000000000000000901009000901000000901009 (list; graph; listen)
OFFSET

1,3

EXAMPLE

a(5)=concatenate(a(4)a(3)a(2)a(1))-a(4)=901910-901=901009

CROSSREFS

Sequence in context: A015025 A027878 A045793 this_sequence A015107 A024124 A036255

Adjacent sequences: A069051 A069052 A069053 this_sequence A069055 A069056 A069057

KEYWORD

easy,nonn

AUTHOR

Benoit Cloitre (benoit7848c(AT)orange.fr), Apr 03 2002

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Last modified December 2 15:58 EST 2008. Contains 150992 sequences.


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