login
A071592
Numbers m such that Reversal(m) is not squarefree.
0
4, 8, 9, 18, 21, 23, 25, 27, 29, 36, 40, 42, 44, 45, 46, 48, 52, 54, 57, 61, 63, 65, 67, 69, 72, 80, 81, 82, 84, 86, 88, 89, 90, 94, 99, 108, 117, 121, 126, 135, 139, 144, 148, 153, 162, 163, 169, 171, 180, 189, 198, 207, 210, 211, 212, 213, 214, 215, 216, 217, 218
OFFSET
1,1
PROG
(PARI) isok(m) = !issquarefree(fromdigits(Vecrev(digits(m)))); \\ Michel Marcus, Feb 16 2021
CROSSREFS
Complement of A071591.
Sequence in context: A334858 A162898 A257009 * A089765 A116030 A116020
KEYWORD
base,easy,nonn
AUTHOR
Benoit Cloitre, Jun 01 2002
STATUS
approved