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 A104233 Sequence of positive integers which have a "compact" representation which uses fewer decimal digits than just writing the number out normally. 0
 125, 128, 216, 243, 256, 343, 512, 625, 729, 1000, 1015, 1016, 1017, 1018, 1019, 1020, 1021, 1022, 1023, 1024, 1025, 1026, 1027, 1028, 1029, 1030, 1031, 1032, 1033 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS You are allowed to use the following symbols as well: ( ) grouping + addition - subtraction * multiplication / division ^ exponentiation Note that 1015 to 1033 are all representable in the form 4^5-d or 4^5+d, where d is a single digit. The complexity of a number has been defined in several different ways by different authors. See the Index to the OEIS for other definitions. - Jonathan Vos Post, Apr 02 2005 REFERENCES R. K. Guy, Unsolved Problems Number Theory, Sect. F26. LINKS J. Arias de Reyna, Complejidad de los nĂºmeros naturales, Gaceta R. Soc. Mat. Esp., 3 (2000), 230-250. [Cached copy, with permission] R. K. Guy, Some suspiciously simple sequences, Amer. Math. Monthly 93 (1986), 186-190; 94 (1987), 965; 96 (1989), 905. Eric Weisstein's World of Mathematics, Integer Complexity FORMULA complexity(a(n)) < ceiling(log_10(a(n))) for the definition of integer complexity given. - Jonathan Vos Post, Apr 02 2005 CROSSREFS Cf. A036057, A005245, A003313, A076142, A076091, A061373, A005421, A064097, A005520, A025280, A003037. Sequence in context: A028939 A195420 A080538 * A046759 A115938 A126895 Adjacent sequences:  A104230 A104231 A104232 * A104234 A104235 A104236 KEYWORD nonn,base AUTHOR Jack Brennen, Apr 01 2005 STATUS approved

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Last modified June 5 23:10 EDT 2020. Contains 334858 sequences. (Running on oeis4.)