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.

A031473 Numbers whose base-5 representation has 3 more 0's than 4's.

Original entry on oeis.org

125, 250, 375, 626, 627, 628, 630, 635, 640, 650, 675, 700, 750, 875, 1000, 1251, 1252, 1253, 1255, 1260, 1265, 1275, 1300, 1325, 1375, 1500, 1625, 1876, 1877, 1878, 1880, 1885, 1890, 1900, 1925, 1950, 2000, 2125, 2250
Offset: 1

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Crossrefs

Cf. A007091.

Programs

  • Mathematica
    Select[Range[2300],DigitCount[#,5,0]==DigitCount[#,5,4]+3&] (* Harvey P. Dale, Jul 23 2012 *)