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Search: id:A153644
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A153644 Sequence allows us to find X values in the equation X^3+39*X^2=Y^2 +0
1
42, 82, 130, 186, 250, 322, 402, 490, 586, 690, 802, 922, 1050, 1186, 1330, 1482, 1642, 1810, 1986, 2170, 2362, 2562, 2770, 2986, 3210, 3442, 3682, 3930, 4186, 4450, 4722, 5002, 5290, 5586, 5890, 6202, 6522 (list; graph; listen)
OFFSET

1,1

COMMENT

a(n) = 4n^2+28n+10 = 2*(seventh diagonal to A153238)

FORMULA

a(n) = 4n^2+28n+10

EXAMPLE

a(1)=42, 42^3+39*42^2=378^2; a(37)=6522, 6522^3+39*6522^2=528282^2

CROSSREFS

Cf. A153238, A067076

Sequence in context: A072326 A068700 A135850 this_sequence A160283 A019283 A067296

Adjacent sequences: A153641 A153642 A153643 this_sequence A153645 A153646 A153647

KEYWORD

nonn

AUTHOR

Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Dec 30 2008

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Last modified November 23 17:09 EST 2009. Contains 167438 sequences.


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