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a(n) = ceiling(n*log(n)).
13

%I #11 Sep 04 2024 22:02:17

%S 0,2,4,6,9,11,14,17,20,24,27,30,34,37,41,45,49,53,56,60,64,69,73,77,

%T 81,85,89,94,98,103,107,111,116,120,125,130,134,139,143,148,153,157,

%U 162,167,172,177,181,186,191,196,201,206,211,216,221,226,231,236,241

%N a(n) = ceiling(n*log(n)).

%Y See A050503 for more information.

%K nonn

%O 1,2

%A _N. J. A. Sloane_, Dec 27 1999