A176313 First of two consecutive numbers with at least one 3 in their prime signature.

135, 296, 343, 375, 999, 1160, 1431, 1592, 1624, 2295, 2375, 2456, 2727, 2888, 3429, 3591, 3624, 3752, 3992, 4023, 4184, 4887, 4913, 5048, 5144, 5319, 5480, 5831, 6183, 6344, 6375, 6615, 6776, 6858, 6859, 7479, 7624, 7640, 7749, 7911, 8072, 8375, 8775, 8936, 9125, 9207, 9368, 9624, 10071, 10232, 10375, 10503, 10632, 10664, 10984, 11124, 11319, 11367, 11528, 11624, 11799, 11960

Offset

1,1

Links

Amiram Eldar, Table of n, a(n) for n = 1..10000

Example

135 is a term since 135 = 3^3 * 5 and 136 = 2^3 * 17.

Mathematica

f[n_]:=MemberQ[Last/@FactorInteger[n], 3]; Select[Range[8!], f[#]&&f[#+1]&]

Crossrefs

A068140 lists the smallest of two consecutive numbers such that each is divisible by a cube greater than 1. See also A000578, A001235, A176297, A176350.

Sequence in context: A325569 A349176 A342189 * A335328 A215173 A225360

Adjacent sequences: A176310 A176311 A176312 * A176314 A176315 A176316

Keyword

nonn

Author

Vladimir Joseph Stephan Orlovsky, Dec 07 2010

Extensions

Edited by Matthew Vandermast, Dec 09 2010

Status

approved