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a(n) = floor(n*t), t = 1 + sqrt(5)/2.
2

%I #11 Dec 17 2021 20:38:34

%S 0,2,4,6,8,10,12,14,16,19,21,23,25,27,29,31,33,36,38,40,42,44,46,48,

%T 50,52,55,57,59,61,63,65,67,69,72,74,76,78,80,82,84,86,88,91,93,95,97,

%U 99,101,103,105,108,110,112,114,116,118,120,122,124,127

%N a(n) = floor(n*t), t = 1 + sqrt(5)/2.

%Y Cf. A176055, A350092 (t^n), A000201 (phi*n).

%K nonn,easy

%O 0,2

%A _N. J. A. Sloane_, Nov 24 2000