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Search: id:A085634
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| A085634 |
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Numbers of the form 2^a + 3^b = 2^c + 3^d for nonnegative a, b, c, d and a <> c. |
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+0
3
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OFFSET
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1,1
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COMMENT
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a(6) > 10^200 if a(6) exists.
No more terms < 10^4000. - David Wasserman (wasserma(AT)spawar.navy.mil), Feb 07 2005
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EXAMPLE
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a(5) = 256 + 3 = 2^8 + 3^1 = 259 = 16 + 243 = 2^4 + 3^5.
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CROSSREFS
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Sequence in context: A087373 A155030 A030468 this_sequence A157478 A088903 A094205
Adjacent sequences: A085631 A085632 A085633 this_sequence A085635 A085636 A085637
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KEYWORD
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nonn,more
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AUTHOR
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Frank.Ellermann(AT)t-online.de, Jul 11 2003
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