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 A071107 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 +,-,*,/,^. 4
 1, 3, 27, 115792089237316195423570985008687907853269984665640564039457584007913129639936 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS a(4) = 2^(4^4) = 2^256 = 115792089237316195423570985008687907853269984665640564039457584007913129639936 with 78 digits. a(5) = 2^(3^(4^6)) with more than 10^1950 digits. LINKS EXAMPLE 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 +, -, *, /, ^. CROSSREFS Cf. A070960. Sequence in context: A014222 * A162414 A188927 A146072 A064234 A224579 Adjacent sequences: A071104 A071105 A071106 * A071108 A071109 A071110 KEYWORD nonn AUTHOR Koksal Karakus (karakusk(AT)hotmail.com), May 27 2002 STATUS approved

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Last modified January 27 21:49 EST 2023. Contains 359849 sequences. (Running on oeis4.)