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Search: id:A071107
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| A071107 |
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a(n) is the greatest integer that can be obtained from the integers {1, 2, 3, ..., n} using each number at most once and the operators +,-,*,/,^. |
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+0
5
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| 1, 3, 27, 115792089237316195423570985008687907853269984665640564039457584007913129639936
(list; graph; listen)
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OFFSET
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1,2
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COMMENT
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a(4) = 2^(4^4) = 2^256 = 115792089237316195423570985008687907853269984665640564039457584007913129639936 with 78 digits. a(5) = 2^(3^(4^6)) with more than 10^1950 digits.
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EXAMPLE
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a(3) = 27 because 3^(2+1) = 27 is the greatest integer that can be obtained by using 1, 2, 3 once and the operations +, -, *, /, ^.
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CROSSREFS
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Cf. A070960.
Sequence in context: A055777 A014222 A162414 this_sequence A146072 A073049 A064234
Adjacent sequences: A071104 A071105 A071106 this_sequence A071108 A071109 A071110
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KEYWORD
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nonn
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AUTHOR
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Koksal Karakus (karakusk(AT)hotmail.com), May 27 2002
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