cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

Showing 1-3 of 3 results.

A004230 a(n) = 10000*log_10(n) rounded up.

Original entry on oeis.org

0, 3011, 4772, 6021, 6990, 7782, 8451, 9031, 9543, 10000, 10414, 10792, 11140, 11462, 11761, 12042, 12305, 12553, 12788, 13011, 13223, 13425, 13618, 13803, 13980, 14150, 14314, 14472, 14624
Offset: 1

Views

Author

N. J. A. Sloane

Keywords

Crossrefs

Cf. A004228, A004239.
Cf. A004218, A004221, A004224, A004227.

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

Original entry on oeis.org

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

Views

Author

N. J. A. Sloane

Keywords

Crossrefs

Cf. A004226, A004227.
Cf. A004216, A004219, A004222, A004228.

Programs

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

A004229 a(n) = 10000*log_10(n) rounded to the nearest integer.

Original entry on oeis.org

0, 3010, 4771, 6021, 6990, 7782, 8451, 9031, 9542, 10000, 10414, 10792, 11139, 11461, 11761, 12041, 12304, 12553, 12788, 13010, 13222, 13424, 13617, 13802, 13979, 14150, 14314, 14472, 14624
Offset: 1

Views

Author

N. J. A. Sloane

Keywords

Crossrefs

Cf. A004228, A004230.
Cf. A004220, A004223, A004226.

Programs

  • Mathematica
    Round[10000*Log10[Range[30]]] (* Harvey P. Dale, Aug 22 2018 *)
Showing 1-3 of 3 results.

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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