A172329 a(n) = floor(n*(sqrt(11) + sqrt(2))).

0, 4, 9, 14, 18, 23, 28, 33, 37, 42, 47, 52, 56, 61, 66, 70, 75, 80, 85, 89, 94, 99, 104, 108, 113, 118, 123, 127, 132, 137, 141, 146, 151, 156, 160, 165, 170, 175, 179, 184, 189, 193, 198, 203, 208, 212, 217, 222, 227, 231, 236

Offset: 0

Author

Vincenzo Librandi, Feb 01 2010

Keywords

• nonn
• easy
• less

Comments

Also integer part of n*4.7308383527..., where the constant is the largest root of x^4 - 26*x^2 + 81.

Links

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

Crossrefs

Cf. A110117, A172323-A172332, A172334, A172336-A172338.

Programs

Magma

[Floor(n*(Sqrt(11)+Sqrt(2))): n in [0..60]];

Maple

a:=n->floor(n*(sqrt(11)+sqrt(2))): seq(a(n),n=0..60); # Muniru A Asiru, Sep 28 2018

Mathematica

With[{c=Sqrt[11]+Sqrt[2]},Table[Floor[c n], {n,0,50}]]  (* Harvey P. Dale, Mar 12 2011 *)

PARI

vector(60, n, n--; floor(n*(sqrt(11)+sqrt(2)))) \\ G. C. Greubel, Sep 28 2018