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Search: id:A143761
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A143761 a(n+1) = a(n)^2 - n*a(n) + n^2, a(1) = 1. +0
7
1, 1, 3, 9, 61, 3441, 11819871, 139709267717593, 19518679486184955909459972969, 380978848884417414427615903969045678210740619589070918321 (list; graph; listen)
OFFSET

1,3

COMMENT

Let f(n+1,k) = f(n,k)^2 + k*n*f(n,k) + n^2, f(1, k) = 1:

f(n,0)=A143760(n), f(n,-1)=a(n), f(n,+1)=A143762(n),

f(n,-2)=A143763(n), f(n,+2)=A143764(n), f(n,-3)=A143765(n),

f(n,+3)=A143766(n).

LINKS

Index entries for sequences of form a(n+1)=a(n)^2 + ... [From Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Sep 11 2008]

CROSSREFS

Sequence in context: A018504 A140812 A018513 this_sequence A064703 A085435 A121696

Adjacent sequences: A143758 A143759 A143760 this_sequence A143762 A143763 A143764

KEYWORD

nonn

AUTHOR

Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Sep 01 2008

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Last modified November 25 14:49 EST 2009. Contains 167514 sequences.


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