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.

A043362 Duplicate of A023735.

Original entry on oeis.org

18, 43, 68, 78, 83, 88, 90, 91, 92, 94, 98, 118, 143, 168, 193, 203, 208, 213
Offset: 1

Views

Author

Harvey P. Dale, Mar 24 2021

Keywords

Programs

  • Mathematica
    Select[Range[200],DigitCount[#,5,3]==1&] (* Harvey P. Dale, Mar 24 2021 *)

A023734 Numbers with a single 3 in their base-5 expansion.

Original entry on oeis.org

3, 8, 13, 15, 16, 17, 19, 23, 28, 33, 38, 40, 41, 42, 44, 48, 53, 58, 63, 65, 66, 67, 69, 73, 75, 76, 77, 79, 80, 81, 82, 84, 85, 86, 87, 89, 95, 96, 97, 99, 103, 108, 113, 115, 116, 117, 119, 123, 128, 133, 138, 140, 141, 142, 144, 148, 153, 158
Offset: 1

Views

Author

Keywords

Crossrefs

Programs

  • Maple
    seq(`if`(numboccur(3,convert(n,base,5))=1,n,NULL),n=0..200); # Nathaniel Johnston, Jun 27 2011
  • Mathematica
    Select[ Range[ 150 ], (Count[ IntegerDigits[ #, 5 ], 3 ]==1)& ]

A023736 Numbers with exactly 3 3's in their base-5 expansion.

Original entry on oeis.org

93, 218, 343, 393, 418, 443, 453, 458, 463, 465, 466, 467, 469, 473, 493, 593, 718, 843, 968, 1018, 1043, 1068, 1078, 1083, 1088, 1090, 1091, 1092, 1094, 1098, 1118, 1218, 1343, 1468, 1593, 1643, 1668, 1693, 1703, 1708
Offset: 1

Views

Author

Keywords

Crossrefs

Programs

  • Maple
    seq(`if`(numboccur(3,convert(n,base,5))=3,n,NULL),n=0..2000); # Nathaniel Johnston, Jun 27 2011
  • Mathematica
    Select[ Range[ 1750 ], (Count[ IntegerDigits[ #, 5 ], 3 ]==3)& ]
Showing 1-3 of 3 results.