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Search: id:A105175
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A105175 Define a(1)=0,a(2)=0,a(3)=9235919,a(4)=14984879 then a(n)=(a(3)+a(4)+1)*(2*a(n-2)+1)-a(n-3)-1. These numbers are such that 71*(a(n)^2)+71*a(n)+1 = j^2 = a square. +0
1
0, 0, 9235919, 14984879, 447402699579360, 725891508817440, 21672901717138141202159 (list; graph; listen)
OFFSET

1,3

CROSSREFS

Sequence in context: A106787 A105012 A015350 this_sequence A069376 A066703 A162030

Adjacent sequences: A105172 A105173 A105174 this_sequence A105176 A105177 A105178

KEYWORD

nonn

AUTHOR

Pierre CAMI (pierrecami(AT)tele2.fr), Apr 11 2005

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Last modified December 7 08:40 EST 2009. Contains 170430 sequences.


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