A202308 Floor(sqrt(13*n)).

0, 3, 5, 6, 7, 8, 8, 9, 10, 10, 11, 11, 12, 13, 13, 13, 14, 14, 15, 15, 16, 16, 16, 17, 17, 18, 18, 18, 19, 19, 19, 20, 20, 20, 21, 21, 21, 21, 22, 22, 22, 23, 23, 23, 23, 24, 24, 24, 24, 25, 25, 25, 26, 26, 26, 26, 26, 27, 27, 27, 27, 28, 28

Offset

0,2

Links

Vincenzo Librandi, Table of n, a(n) for n = 0..10000

Formula

a(n) = A000196(13n).

Mathematica

Table[Floor[Sqrt[13n]], {n, 0, 80}].

Prog

(Magma) [Floor(Sqrt(13*n)) : n in [0..80]];
(PARI) sqrtint(13*n) \\ Charles R Greathouse IV, Jan 17 2012

Crossrefs

Cf. A172471, A202304, A202305, A202306, A202307.

Sequence in context: A195770 A196008 A004220 * A079058 A036496 A196112

Adjacent sequences: A202305 A202306 A202307 * A202309 A202310 A202311

Keyword

nonn,easy

Author

Vincenzo Librandi, Jan 17 2012

Status

approved