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.

Previous Showing 11-15 of 15 results.

A136702 Final nonzero digit of n! in base 16.

Original entry on oeis.org

1, 1, 2, 6, 8, 8, 13, 11, 8, 8, 15, 5, 12, 12, 8, 8, 8, 8, 3, 9, 4, 4, 8, 8, 12, 12, 8, 8, 14, 6, 4, 12, 8, 8, 11, 1, 4, 4, 8, 8, 4, 4, 8, 8, 2, 10, 12, 4, 12, 12, 8, 8, 2, 10, 12, 4, 14, 14, 12, 4, 7, 11, 10, 6, 8, 8, 11, 1, 4, 4, 8, 8, 4, 4, 8, 8, 10, 2, 12, 4, 4, 4, 8, 8, 6, 14, 4, 12, 2, 2, 4, 12
Offset: 0

Views

Author

Carl R. White, Jan 16 2008

Keywords

Examples

			6! = 720 decimal = 2D0 hexadecimal, so a(6) = 13.
		

Crossrefs

Programs

  • PARI
    a(n) = {d = digits(n!, 16); k = #d; while (!d[k] && (k!=1), k--); d[k];} \\ Michel Marcus, Sep 21 2016

A136693 Final nonzero digit of n! in base 6.

Original entry on oeis.org

1, 1, 2, 1, 4, 2, 2, 2, 4, 4, 4, 2, 4, 4, 2, 2, 2, 4, 2, 2, 4, 2, 2, 4, 4, 4, 2, 4, 4, 2, 4, 4, 2, 2, 2, 4, 4, 4, 2, 4, 4, 2, 2, 2, 4, 2, 2, 4, 2, 2, 4, 4, 4, 2, 2, 2, 4, 2, 2, 4, 4, 4, 2, 2, 2, 4, 2, 2, 4, 4, 4, 2, 4, 4, 2, 4, 4, 2, 2, 2, 4, 4, 4, 2, 4, 4, 2, 2, 2, 4, 4, 4, 2, 4, 4, 2, 2, 2, 4, 2
Offset: 0

Views

Author

Carl R. White, Jan 16 2008

Keywords

Examples

			6! = 720 decimal = 3200 senary, so a(6) = 2.
		

Crossrefs

Programs

  • Mathematica
    nzd6[n_]:=Module[{c=IntegerExponent[n!,6]},IntegerDigits[n!,6] [[-(c+1)]]]; Array[nzd6,100,0] (* Harvey P. Dale, Sep 02 2015 *)

A136700 Final nonzero digit of n! in base 14.

Original entry on oeis.org

1, 1, 2, 6, 10, 8, 6, 10, 10, 6, 4, 2, 10, 4, 4, 4, 8, 10, 12, 4, 10, 8, 8, 2, 6, 10, 8, 6, 12, 12, 10, 2, 8, 12, 2, 12, 12, 10, 2, 8, 12, 2, 6, 6, 12, 8, 4, 6, 8, 2, 2, 4, 12, 6, 2, 12, 6, 6, 12, 8, 4, 6, 8, 8, 8, 2, 6, 10, 8, 6, 2, 2, 4, 12, 6, 2, 12, 10, 10, 6, 4, 2, 10, 4, 10, 10, 6, 4, 2, 10, 4
Offset: 0

Views

Author

Carl R. White, Jan 16 2008

Keywords

Examples

			6! = 720 decimal = 396 quatridecimal, so a(6) = 6.
		

Crossrefs

A136762 Leading digit of n! in base 12.

Original entry on oeis.org

1, 1, 2, 6, 2, 10, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 2, 3, 4, 7, 1, 1, 3, 6, 1, 2, 5, 11, 2, 5, 1, 2, 7, 1, 4, 1, 3, 11, 2, 9, 2, 9, 2, 9, 2, 10, 3, 1, 4, 1, 6, 2, 9, 3, 1, 6, 2, 11, 4, 1, 9, 4, 1, 9, 4, 1, 10, 4, 2, 1, 6, 3, 1, 9, 4, 2, 1, 8, 4, 2, 1, 9, 5, 3, 1, 1, 7, 4, 2, 1, 1, 8, 5, 3, 2, 1, 11, 7, 5, 3
Offset: 0

Views

Author

Carl R. White, Jan 21 2008

Keywords

Crossrefs

Programs

  • Mathematica
    f[n_]:=First[IntegerDigits[n!,12]]; lst={};Do[AppendTo[lst,f[n]],{n,0,2*5!}];lst (* Vladimir Joseph Stephan Orlovsky, Jun 14 2009 *)
    a136762[n_Integer] := First[Select[IntegerDigits[n!, 12], # > 0 &]]; a136762 /@ Range[0, 144] (* Michael De Vlieger, Aug 13 2014 *)

A136772 n! never ends in this many 0's in base 12.

Original entry on oeis.org

7, 16, 24, 29, 33, 37, 38, 45, 51, 53, 57, 64, 69, 73, 77, 78, 87, 93, 96, 104, 105, 109, 113, 117, 124, 125, 128, 132, 141, 145, 150, 158, 159, 165, 173, 177, 181, 185, 188, 190, 194, 198, 199, 201, 212, 213, 221, 225, 230, 234, 238, 239, 244, 248, 253, 254
Offset: 1

Views

Author

Carl R. White, Jan 21 2008

Keywords

Crossrefs

Previous Showing 11-15 of 15 results.