A230854 Numbers n such that m + (sum of digits in base-3 representation of m) = n has exactly two solutions.

4, 8, 10, 12, 14, 18, 20, 22, 24, 30, 36, 38, 40, 42, 46, 48, 50, 52, 58, 64, 66, 68, 70, 74, 76, 78, 80, 82, 88, 90, 92, 94, 96, 100, 102, 104, 106, 112, 118, 120, 122, 124, 128, 130, 132, 134, 140, 146, 148, 150, 152, 156, 158, 160, 162, 164, 170, 172, 174, 176, 178, 182, 184, 186, 188

Offset

1,1

Links

Donovan Johnson, Table of n, a(n) for n = 1..10000

Index entries for Colombian or self numbers and related sequences

Mathematica

Select[Tally[Table[m+Total[IntegerDigits[m, 3]], {m, 200}]], #[[2]]==2&][[All, 1]] (* Harvey P. Dale, Aug 17 2019 *)

Crossrefs

Related base-3 sequences: A053735, A134451, A230641, A230642, A230643, A230853, A230854, A230855, A230856, A230639, A230640, A010063 (trajectory of 1)

Sequence in context: A175226 A057166 A358228 * A377035 A360668 A038801

Adjacent sequences: A230851 A230852 A230853 * A230855 A230856 A230857

Keyword

nonn,base

Author

N. J. A. Sloane, Oct 31 2013

Status

approved