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Nonnegative numbers excluding 1 and 2.
0

%I #19 Jun 17 2017 03:04:38

%S 0,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,

%T 27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,

%U 50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74

%N Nonnegative numbers excluding 1 and 2.

%H <a href="/index/Rec#order_02">Index entries for linear recurrences with constant coefficients</a>, signature (2,-1).

%t Join[{0},Range[3,80]] (* _Harvey P. Dale_, Jan 18 2016 *)

%o (PARI) a(n)=if(n==1,0,n+1) \\ _Charles R Greathouse IV_, Sep 02 2011

%Y Cf. A087156.

%K nonn,easy

%O 1,2

%A _Giovanni Teofilatto_, Feb 18 2006

%E Edited by _N. J. A. Sloane_, Oct 11 2008