A004225 a(n) = 1000*log_10(n) rounded down.

0, 301, 477, 602, 698, 778, 845, 903, 954, 1000, 1041, 1079, 1113, 1146, 1176, 1204, 1230, 1255, 1278, 1301, 1322, 1342, 1361, 1380, 1397, 1414, 1431, 1447, 1462, 1477, 1491, 1505, 1518, 1531, 1544

Offset

1,2

Links

Table of n, a(n) for n=1..35.

Mathematica

Floor[1000 Log10[Range[40]]] (* Harvey P. Dale, May 27 2024 *)

Crossrefs

Cf. A004226, A004227.

Cf. A004216, A004219, A004222, A004228.

Sequence in context: A015275 A051306 A151609 * A004226 A297913 A298506

Adjacent sequences: A004222 A004223 A004224 * A004226 A004227 A004228

Keyword

nonn

Author

N. J. A. Sloane

Status

approved