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A228177 Floor(n*(sqrt(6)+sqrt(5))). 1
0, 4, 9, 14, 18, 23, 28, 32, 37, 42, 46, 51, 56, 60, 65, 70, 74, 79, 84, 89, 93, 98, 103, 107, 112, 117, 121, 126, 131, 135, 140, 145, 149, 154, 159, 163, 168, 173, 178, 182, 187, 192, 196, 201, 206, 210, 215, 220, 224, 229, 234, 238, 243, 248, 253, 257, 262 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

a(n) = integer part of n*4.6855577..., where the constant is the largest root of x^4 -22*x^2 +1.

LINKS

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

MATHEMATICA

With[{c = Sqrt[6] + Sqrt[5]}, Floor[c Range[0, 60]]]

PROG

(MAGMA) [Floor(n*(Sqrt(6)+Sqrt(5))): n in [0..60]];

CROSSREFS

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

Sequence in context: A313054 A038123 A214989 * A172329 A182778 A313055

Adjacent sequences:  A228174 A228175 A228176 * A228178 A228179 A228180

KEYWORD

nonn,easy

AUTHOR

Vincenzo Librandi, Aug 15 2013

STATUS

approved

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Last modified April 20 17:56 EDT 2021. Contains 343135 sequences. (Running on oeis4.)