A018082 Powers of fourth root of 13 rounded to nearest integer.

1, 2, 4, 7, 13, 25, 47, 89, 169, 321, 609, 1157, 2197, 4172, 7921, 15041, 28561, 54232, 102978, 195538, 371293, 705022, 1338716, 2541993, 4826809, 9165285, 17403307, 33045903, 62748517, 119148699, 226242996, 429596743, 815730721, 1548933086, 2941158942, 5584757663

Offset

0,2

Links

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

Mathematica

Round[Surd[13, 4]^Range[0, 30]] (* Harvey P. Dale, Apr 07 2017 *)
Floor[# + 1/2]&/@((Power[13, (4)^-1])^Range[0, 40]) (* Vincenzo Librandi, Apr 22 2017 *)

Crossrefs

Cf. A011010 (fourth root of 13).

Sequence in context: A224341 A235684 A367400 * A018083 A108361 A082423

Adjacent sequences: A018079 A018080 A018081 * A018083 A018084 A018085

Keyword

nonn

Author

N. J. A. Sloane.

Status

approved