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%I #12 May 27 2024 11:00:20
%S 0,301,477,602,698,778,845,903,954,1000,1041,1079,1113,1146,1176,1204,
%T 1230,1255,1278,1301,1322,1342,1361,1380,1397,1414,1431,1447,1462,
%U 1477,1491,1505,1518,1531,1544
%N a(n) = 1000*log_10(n) rounded down.
%t Floor[1000 Log10[Range[40]]] (* _Harvey P. Dale_, May 27 2024 *)
%Y Cf. A004226, A004227.
%Y Cf. A004216, A004219, A004222, A004228.
%K nonn
%O 1,2
%A _N. J. A. Sloane_