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 A017919 Powers of sqrt(5) rounded down. 10
 1, 2, 5, 11, 25, 55, 125, 279, 625, 1397, 3125, 6987, 15625, 34938, 78125, 174692, 390625, 873464, 1953125, 4367320, 9765625, 21836601, 48828125, 109183006, 244140625, 545915033, 1220703125, 2729575167 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 COMMENTS a(n) is the total length (rounded down to integer) of the elements of a variant of a 5-element fractal after n iterations, starting with 5 elements, each of whose length is 1/5 (in some units). See illustration in the Links. - Kival Ngaokrajang, Feb 26 2015 LINKS Vincenzo Librandi, Table of n, a(n) for n = 0..1000 Kival Ngaokrajang, Illustration of initial terms MATHEMATICA Floor[(Sqrt[5])^Range[0, 40]] (* Vincenzo Librandi, Nov 20 2011 *) PROG (PARI) a(n)=sqrtint(5^n) \\ Charles R Greathouse IV, Nov 18 2011 (MAGMA) [Floor(Sqrt(5^n)): n in [0..40]]; // Vincenzo Librandi, Nov 20 2011 CROSSREFS Cf. A017920, A017921. Sequence in context: A151529 A192922 A215091 * A017920 A228765 A006054 Adjacent sequences:  A017916 A017917 A017918 * A017920 A017921 A017922 KEYWORD nonn AUTHOR STATUS approved

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Last modified May 17 16:03 EDT 2021. Contains 343980 sequences. (Running on oeis4.)