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.

A037045 5-white numbers: partition digits of n^5 into blocks of 5 starting at right; sum of these 5-digit numbers equals n.

Original entry on oeis.org

0, 1, 27100, 73440, 95120, 104336, 139564, 143901, 144442, 148780, 155555, 165311, 172898, 182655, 195119, 204876, 204877, 212463, 216530, 217341, 227098, 233873, 234685, 238752, 239021, 239563, 244441, 248779, 251216, 255554, 260432
Offset: 1

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Examples

			27100 is a 5-white number since 27100^5=14616603103510000000000 and 146+16603+10351+00000+00000=27100.
		

Crossrefs

Programs

  • Mathematica
    w5Q[n_]:=Module[{idn5=IntegerDigits[n^5],len},len=Length[idn5];Total[ FromDigits/@Partition[PadLeft[idn5,len+5-Mod[len,5]],5]]==n]; Select[ Range[0,300000],w5Q] (* Harvey P. Dale, Jul 27 2011 *)
    Select[Range[0, 10^6], # == Plus@@ IntegerDigits[#^5, 10^5] &] (* Giovanni Resta, Jul 12 2016 *)
    Select[Range[0,261000],Total[FromDigits/@(Reverse/@Partition[ Reverse[ IntegerDigits[ #^5]],UpTo[5]])]==#&] (* Harvey P. Dale, Aug 22 2021 *)

Extensions

Offset set to 1 by Paolo P. Lava, Jul 12 2016