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A017925 Powers of sqrt(7) rounded down. 2
1, 2, 7, 18, 49, 129, 343, 907, 2401, 6352, 16807, 44467, 117649, 311269, 823543, 2178889, 5764801, 15252229, 40353607, 106765608, 282475249, 747359260, 1977326743, 5231514822, 13841287201, 36620603758 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 0..1000

MATHEMATICA

Floor[(Sqrt[7])^Range[0, 40]] (* Vincenzo Librandi, Nov 20 2011 *)

PROG

(PARI) a(n)=sqrtint(7^n) \\ Charles R Greathouse IV, Nov 18 2011

(MAGMA) [Floor(Sqrt(7^n)): n in [0..40]]; // Vincenzo Librandi, Nov 20 2011

CROSSREFS

Sequence in context: A182197 A022726 A192873 * A030236 A074141 A122931

Adjacent sequences:  A017922 A017923 A017924 * A017926 A017927 A017928

KEYWORD

nonn

AUTHOR

N. J. A. Sloane

STATUS

approved

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Last modified April 22 10:58 EDT 2019. Contains 322330 sequences. (Running on oeis4.)