A062086 Squarefree numbers with all odd digits.

1, 3, 5, 7, 11, 13, 15, 17, 19, 31, 33, 35, 37, 39, 51, 53, 55, 57, 59, 71, 73, 77, 79, 91, 93, 95, 97, 111, 113, 115, 119, 131, 133, 137, 139, 151, 155, 157, 159, 173, 177, 179, 191, 193, 195, 197, 199, 311, 313, 317, 319, 331, 335, 337, 339, 353, 355, 357, 359

Offset

0,2

Links

Table of n, a(n) for n=0..58.

Example

a(7)=15, 15 = 3*5.

Mathematica

Select[Range[400], SquareFreeQ[#]&&AllTrue[IntegerDigits[#], OddQ]&] (* Requires Mathematica version 10 or later *) (* Harvey P. Dale, Jun 23 2018 *)

Crossrefs

Sequence in context: A294674 A340077 A179458 * A283680 A005239 A141107

Adjacent sequences: A062083 A062084 A062085 * A062087 A062088 A062089

Keyword

nonn,base,easy

Author

Amarnath Murthy, Jun 16 2001

Extensions

More terms from Larry Reeves (larryr(AT)acm.org), Jun 18 2001

Status

approved