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A155477 43^(2n+1) 0
43, 79507, 147008443, 271818611107, 502592611936843, 929293739471222707, 1718264124282290785243, 3177070365797955661914307, 5874403106360420018879553643, 10861771343660416614908294685907, 20083415214428110320965436874242043 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

COMMENTS

Number n such that if a=n, b=6n, c=11n, d=6n*sqrt(43n), then a^3+b^3+c^3=d^2; example: n=43=a, b=258, c=473, d=11094, 43^3+258^3+473^3=11094^2

FORMULA

a(n)= 43^(2n+1)

EXAMPLE

For n=0, a(0)=43; n=1, a(1)=43^3=79507

MATHEMATICA

43^(2Range[0, 11]+1) (* From Harvey P. Dale, Oct 03 2011 *)

CROSSREFS

Sequence in context: A184144 A177488 A185558 * A125828 A177417 A116139

Adjacent sequences:  A155474 A155475 A155476 * A155478 A155479 A155480

KEYWORD

nonn

AUTHOR

Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Jan 23 2009

EXTENSIONS

More terms from Harvey P. Dale, Oct 03 2011

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Last modified February 16 09:27 EST 2012. Contains 205904 sequences.