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A119378 Palindromic composites such that some digit permutation is prime. 0
121, 232, 272, 292, 323, 343, 434, 494, 575, 616, 737, 767, 818, 838, 878, 949, 959, 979, 10201, 10801, 10901, 11011, 11611, 11711, 11911, 12121, 12221, 12521, 13031, 13231, 13531, 13631, 14041, 14141, 14641, 14941, 15151, 15251, 15751, 15851 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..40.

EXAMPLE

121 is composite that have a prime digit permutation: 211.

MATHEMATICA

palQ[n_Integer, base_Integer] := Module[{idn = IntegerDigits[n, base]}, idn == Reverse@idn]; fQ[n_] := Union[PrimeQ /@ FromDigits /@ Permutations@ IntegerDigits@n][[ -1]] == True; Select[Range@15850, !PrimeQ@# && palQ[ #, 10] && fQ@# &] (* Robert G. Wilson v *)

CROSSREFS

Sequence in context: A037050 A275028 A036309 * A261618 A084998 A082944

Adjacent sequences:  A119375 A119376 A119377 * A119379 A119380 A119381

KEYWORD

base,nonn

AUTHOR

Tanya Khovanova, Jul 24 2006

EXTENSIONS

More terms from Joshua Zucker and Robert G. Wilson v, Aug 04 2006

STATUS

approved

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Last modified August 24 02:32 EDT 2017. Contains 291052 sequences.