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 A056833 Nearest integer to n^2/7. 2

%I

%S 0,0,1,1,2,4,5,7,9,12,14,17,21,24,28,32,37,41,46,52,57,63,69,76,82,89,

%T 97,104,112,120,129,137,146,156,165,175,185,196,206,217,229,240,252,

%U 264,277,289,302,316,329,343,357,372,386,401,417,432,448

%N Nearest integer to n^2/7.

%H <a href="/index/Rec#order_09">Index entries for linear recurrences with constant coefficients</a>, signature (2, -1, 0, 0, 0, 0, 1, -2, 1).

%F G.f.: -x^2*(x+1)*(x^2-x+1)^2/((x-1)^3*(x^6+x^5+x^4+x^3+x^2+x+1)). [_Colin Barker_, Oct 08 2012]

%t Round[Range[0,60]^2/7] (* or *) LinearRecurrence[{2,-1,0,0,0,0,1,-2,1},{0,0,1,1,2,4,5,7,9},60] (* _Harvey P. Dale_, Jul 31 2019 *)

%o (MAGMA) a056833:=func< n | Round(n^2/7) >; [ a056833(n): n in [0..70] ];

%K nonn,easy

%O 0,5

%A _N. J. A. Sloane_, Sep 02 2000

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Last modified December 16 09:06 EST 2019. Contains 330020 sequences. (Running on oeis4.)