A093501 Numbers whose digit permutations are all squarefree numbers.

1, 2, 3, 5, 6, 7, 10, 11, 13, 14, 15, 17, 19, 22, 26, 30, 31, 33, 34, 35, 37, 38, 39, 41, 43, 47, 51, 53, 55, 58, 59, 62, 66, 70, 71, 73, 74, 77, 78, 79, 83, 85, 87, 91, 93, 95, 97, 101, 103, 107, 109, 110, 111, 113, 114, 115, 118, 119, 130, 131, 133, 134, 137, 138, 141

Offset

1,2

Links

Harvey P. Dale, Table of n, a(n) for n = 1..1000

Example

103 is a term as 103, 301, 013, 031, 130, 310 all are squarefree.

Mathematica

Select[Range[200], AllTrue[FromDigits/@Permutations[IntegerDigits[#]], SquareFreeQ]&] (* Harvey P. Dale, Jun 09 2024 *)

Crossrefs

Cf. A077337.

Sequence in context: A302798 A294472 A077337 * A087007 A047586 A103841

Adjacent sequences: A093498 A093499 A093500 * A093502 A093503 A093504

Keyword

base,easy,nonn,less

Author

Amarnath Murthy, Apr 17 2004

Extensions

More terms from David Wasserman, Oct 25 2006

Status

approved