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A133207 Strobogrammatic non-palindromic primes. 1
619, 16091, 19861, 61819, 116911, 119611, 160091, 169691, 191161, 196961, 686989, 688889, 1068901, 1160911, 1190611, 1191611, 1681891, 1690691, 1898681, 1908061, 1960961, 1990661, 6081809, 6100019, 6108019, 6110119, 6608099, 6610199 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Primes which are invariant under a 180 degree rotation, but do not have a mirror symmetry.

LINKS

Table of n, a(n) for n=1..28.

MATHEMATICA

Select[Range[10000000], PrimeQ[ # ] && Union[IntegerDigits[ # ], {0, 1, 6, 8, 9}] == {0, 1, 6, 8, 9} && Reverse[IntegerDigits[ # ] /. {6 -> 9, 9 -> 6} ] == IntegerDigits[ # ] && Reverse[IntegerDigits[ # ]] != IntegerDigits[ # ] &]

CROSSREFS

Cf. The elements of this sequence are the elements of A007597 (Strobogrammatic primes) excluding the elements of A068188 (Tetradic primes).

Sequence in context: A210887 A118467 A200812 * A182351 A202239 A010031

Adjacent sequences:  A133204 A133205 A133206 * A133208 A133209 A133210

KEYWORD

base,nonn

AUTHOR

Tanya Khovanova, Oct 10 2007

STATUS

approved

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Last modified November 26 19:22 EST 2014. Contains 250103 sequences.