A045936 Numbers n such that n through n+7 are divisible by the same number of distinct primes.

141, 212, 39693, 44360, 44361, 48919, 48920, 48921, 54349, 56014, 56015, 56791, 60044, 65721, 72650, 72651, 73292, 73293, 76581, 76582, 82324, 82325, 86331, 86332, 87758, 87759, 90092, 91814, 91815, 99843, 106249, 112142, 112143, 121594

Offset

1,1

Links

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

Mathematica

npQ[n_]:=Length[Union[Length[FactorInteger[#]]&/@Range[n, n+7]]]==1
Select[Range[125000], npQ]  (* Harvey P. Dale, Feb 23 2011 *)

Crossrefs

Cf. A001221, A006049, A006073, A045932-A045935, A045937-A045938.

Sequence in context: A144799 A208179 A368670 * A228598 A031892 A063373

Adjacent sequences: A045933 A045934 A045935 * A045937 A045938 A045939

Keyword

nonn

Author

David W. Wilson

Extensions

Offset corrected by Amiram Eldar, Oct 26 2019

Status

approved