A317090 Positive integers whose prime multiplicities span an initial interval of positive integers.

2, 3, 5, 6, 7, 10, 11, 12, 13, 14, 15, 17, 18, 19, 20, 21, 22, 23, 26, 28, 29, 30, 31, 33, 34, 35, 37, 38, 39, 41, 42, 43, 44, 45, 46, 47, 50, 51, 52, 53, 55, 57, 58, 59, 60, 61, 62, 63, 65, 66, 67, 68, 69, 70, 71, 73, 74, 75, 76, 77, 78, 79, 82, 83, 84, 85

Offset

1,1

Comments

The first term in this sequence but absent from A179983 is 180.

Links

Table of n, a(n) for n=1..66.

Index to sequences related to prime signature

Mathematica

normalQ[m_]:=Union[m]==Range[Max[m]];
Select[Range[2, 100], normalQ[FactorInteger[#][[All, 2]]]&]

Crossrefs

Cf. A001222, A007916, A055932, A056239, A069799, A112798, A124010, A133808.

Cf. A317087, A317088, A317089, A317091, A317092.

Subsequences: A129912\{1}, A179983\{1}.

Subsequence of A337533.

Sequence in context: A345172 A212167 A339741 * A361393 A179983 A065872

Adjacent sequences: A317087 A317088 A317089 * A317091 A317092 A317093

Keyword

nonn

Author

Gus Wiseman, Jul 21 2018

Status

approved