login
A071591
Numbers m such that Reversal(m) is squarefree.
1
1, 2, 3, 5, 6, 7, 10, 11, 12, 13, 14, 15, 16, 17, 19, 20, 22, 24, 26, 28, 30, 31, 32, 33, 34, 35, 37, 38, 39, 41, 43, 47, 49, 50, 51, 53, 55, 56, 58, 59, 60, 62, 64, 66, 68, 70, 71, 73, 74, 75, 76, 77, 78, 79, 83, 85, 87, 91, 92, 93, 95, 96, 97, 98, 100, 101, 102, 103, 104
OFFSET
1,2
MATHEMATICA
Select[Range[150], SquareFreeQ[FromDigits[Reverse[IntegerDigits[#]]]]&] (* Harvey P. Dale, Feb 23 2011 *)
PROG
(PARI) isok(n) = issquarefree(fromdigits(Vecrev(digits(n)))); \\ Michel Marcus, Jan 16 2018
CROSSREFS
Sequence in context: A361372 A129125 A259444 * A089105 A028769 A094784
KEYWORD
base,easy,nonn
AUTHOR
Benoit Cloitre, Jun 01 2002
EXTENSIONS
Corrected (by deleting duplicate term) by Harvey P. Dale, Feb 23 2011
Missing term 1 inserted by Michel Marcus, Jan 16 2018
STATUS
approved