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Search: id:A123116
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A123116 Sequence allows us to find Y values of the equation: (X-Y)^4-8XY=0 with X>=Y. +0
1
0, 4, 192, 6860, 235008, 7994836, 271656000, 9228697244 (list; graph; listen)
OFFSET

0,2

COMMENT

Sequence gives Y values. To find X values: a(n)=c(n)*(1+d(n))which gives: 0,8,216,7000,235824,7999592,271683720,9228858808,...

FORMULA

b(n)=c(n)*(-1+d(n)) with c(0)=0,c(1)=2 and c(n)=6*c(n-1)-c(n-2) d(0)=1,d(1)=3 and d(n)=6*d(n-1)-d(n-2)

CROSSREFS

Cf. A123057.

Sequence in context: A024266 A102194 A102191 this_sequence A012015 A012102 A007341

Adjacent sequences: A123113 A123114 A123115 this_sequence A123117 A123118 A123119

KEYWORD

nonn

AUTHOR

Mohamed Bouhamida (bhmd95(AT)yahoo.fr), Sep 28 2006

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


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