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 1-10 of 10 results.

A127032 Maximal value of m such that 5^m <= n! : a(n) = floor( log(n!) / log(5) ).

Original entry on oeis.org

0, 0, 1, 1, 2, 4, 5, 6, 7, 9, 10, 12, 14, 15, 17, 19, 20, 22, 24, 26, 28, 30, 32, 34, 36, 38, 40, 42, 44, 46, 48, 50, 52, 55, 57, 59, 61, 63, 66, 68, 70, 73, 75, 77, 80, 82, 85, 87, 89, 92, 94, 97, 99, 102, 104, 107, 109, 112, 114, 117
Offset: 1

Views

Author

Artur Jasinski, Jan 03 2007

Keywords

Crossrefs

Cf. A067850, A127031, A127032, A127033, A127034, A127035, A127036, A127037, A127039.

Programs

  • Mathematica
    With[{c=Log[5]},Table[Floor[Log[n!]/c],{n,60}]] (* Harvey P. Dale, Nov 16 2021 *)

A127034 Maximal value of m such that 11^m <= n! : a(n) = floor( log(n!) / log(11) ).

Original entry on oeis.org

0, 0, 0, 1, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 15, 16, 17, 18, 20, 21, 22, 24, 25, 26, 28, 29, 31, 32, 34, 35, 36, 38, 39, 41, 42, 44, 46, 47, 49, 50, 52, 53, 55, 57, 58, 60, 61, 63, 65, 66, 68, 70, 71, 73, 75, 76, 78
Offset: 1

Views

Author

Artur Jasinski, Jan 03 2007

Keywords

Crossrefs

Cf. A067850, A127031, A127032, A127033, A127034, A127035, A127036, A127037, A127039.

Programs

A127035 Maximal value of m such that 13^m <= n! : a(n) = floor( log(n!) / log(13) ).

Original entry on oeis.org

0, 0, 0, 1, 1, 2, 3, 4, 4, 5, 6, 7, 8, 9, 10, 11, 13, 14, 15, 16, 17, 18, 20, 21, 22, 23, 25, 26, 27, 29, 30, 31, 33, 34, 35, 37, 38, 40, 41, 43, 44, 45, 47, 48, 50, 51, 53, 54, 56, 57, 59, 60, 62, 64, 65, 67, 68, 70, 71, 73
Offset: 1

Views

Author

Artur Jasinski, Jan 03 2007

Keywords

Crossrefs

Cf. A067850, A127031, A127032, A127033, A127034, A127035, A127036, A127037, A127039.

Programs

A127036 a(n) = maximal value of m such that 17^m divides n! (17^m <= n!).

Original entry on oeis.org

0, 0, 0, 1, 1, 2, 3, 3, 4, 5, 6, 7, 7, 8, 9, 10, 11, 12, 13, 14, 16, 17, 18, 19, 20, 21, 22, 23, 25, 26, 27, 28, 30, 31, 32, 33, 35, 36, 37, 38, 40, 41, 42, 44, 45, 46, 48, 49, 51, 52, 53, 55, 56, 57, 59, 60, 62, 63, 65, 66
Offset: 1

Views

Author

Artur Jasinski, Jan 03 2007

Keywords

Crossrefs

Cf. A067850, A127031, A127032, A127033, A127034, A127035, A127036, A127037, A127039.

Programs

A127037 Maximal value of m such that 19^m <= n! : a(n) = floor( log(n!) / log(19) ).

Original entry on oeis.org

0, 0, 0, 1, 1, 2, 2, 3, 4, 5, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 23, 24, 25, 26, 27, 28, 30, 31, 32, 33, 34, 36, 37, 38, 39, 41, 42, 43, 45, 46, 47, 49, 50, 51, 53, 54, 55, 57, 58, 59, 61, 62, 64
Offset: 1

Views

Author

Artur Jasinski, Jan 03 2007

Keywords

Crossrefs

Cf. A067850, A127031, A127032, A127033, A127034, A127035, A127036, A127037, A127039.

Programs

A127039 Maximal value of m such that 29^m <= n! : a(n) = floor( log(n!) / log(29) ).

Original entry on oeis.org

0, 0, 0, 0, 1, 1, 2, 3, 3, 4, 5, 5, 6, 7, 8, 9, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 36, 37, 38, 39, 40, 41, 42, 44, 45, 46, 47, 48, 49, 51, 52, 53, 54, 56
Offset: 1

Views

Author

Artur Jasinski, Jan 03 2007

Keywords

Crossrefs

Cf. A067850, A127031, A127032, A127033, A127034, A127035, A127036, A127037, A127039.

Programs

A127114 n! in base 7.

Original entry on oeis.org

1, 1, 2, 6, 33, 231, 2046, 20460, 225360, 3040650, 42562410, 663200340, 14604306060, 310211542410, 6204234151200, 163322250505200, 4256423144450400, 134630366022322500, 3634363143602406600, 134462435323300144200, 4233013654405404511500
Offset: 0

Views

Author

Artur Jasinski, Jan 05 2007

Keywords

Comments

Number of digits in A127114(n) = A127033(n) + 1.

Crossrefs

Cf. A127109, A127110, A036603, A127112, A127113, A127114, A127115, A127116, A127033.

Programs

  • Mathematica
    b = Table[IntegerDigits[n!, 7], {n, 1, 15}]; a = {}; Do[AppendTo[a, FromDigits[b[[x]]]], {x, 1, Length[b]}]; a (*Artur Jasinski*)
FromDigits[IntegerDigits[#,7]]&/@(Range[0,20]!) (* Harvey P. Dale, Jun 19 2011 *)

Extensions

More terms from Harvey P. Dale, Jun 19 2011

A125552 Maximal value of m such that 3^m <= n! : a(n) = floor( log(n!) / log(3) ).

Original entry on oeis.org

0, 1, 2, 4, 5, 7, 9, 11, 13, 15, 18, 20, 22, 25, 27, 30, 33, 35, 38, 41, 44, 46, 49, 52, 55, 58, 61, 64, 67, 71, 74, 77, 80, 83, 87, 90, 93, 97, 100, 103, 107, 110, 114, 117, 121, 124, 128, 131, 135, 138, 142, 145, 149, 153, 156, 160, 164, 167, 171
Offset: 2

Views

Author

Artur Jasinski, Jan 03 2007

Keywords

Links

Crossrefs

Cf. A127031, A127032, A127033, A127034, A127035, A127036, A127037, A127039.

Programs

Extensions

More terms from R. J. Mathar, Dec 14 2008

A127038 Maximal value of m such that 23^m <= n! : a(n) = floor( log(n!) / log(23) ).

Original entry on oeis.org

0, 0, 0, 1, 1, 2, 2, 3, 4, 4, 5, 6, 7, 8, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 26, 27, 28, 29, 30, 31, 32, 34, 35, 36, 37, 38, 39, 41, 42, 43, 44, 46, 47, 48, 49, 51, 52, 53, 54, 56, 57, 58, 60
Offset: 1

Views

Author

Artur Jasinski, Jan 03 2007

Keywords

Crossrefs

Cf. A067850, A127031, A127032, A127033, A127034, A127035, A127036, A127037, A127039.

Programs

A127041 Maximal value of m such that 31^m <= n! : a(n) = floor( log(n!) / log(31) ).

Original entry on oeis.org

0, 0, 0, 0, 1, 1, 2, 3, 3, 4, 5, 5, 6, 7, 8, 8, 9, 10, 11, 12, 13, 14, 15, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 42, 43, 44, 45, 46, 47, 49, 50, 51, 52, 53, 54
Offset: 1

Views

Author

Artur Jasinski, Jan 03 2007

Keywords

Crossrefs

Cf. A067850, A127031, A127032, A127033, A127034, A127035, A127036, A127037, A127039.

Programs

Showing 1-10 of 10 results.

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