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A045336 Palindromic prime primes: palindromic terms from A019546. 4
2, 3, 5, 7, 353, 373, 727, 757, 32323, 33533, 35353, 35753, 37273, 37573, 72227, 72727, 73237, 75557, 77377, 3222223, 3223223, 3233323, 3252523, 3272723, 3337333, 3353533, 3553553, 3722273, 3732373, 3773773, 7257527, 7327237 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Harvey P. Dale, Table of n, a(n) for n = 1..330

MATHEMATICA

Select[ Range[ 1, 10^7 ], PrimeQ[ # ] && FreeQ[ RealDigits[ # ][ [ 1 ] ], 0 ] && FreeQ[ RealDigits[ # ][ [ 1 ] ], 1 ] && FreeQ[ RealDigits[ # ][ [ 1 ] ], 4 ] && FreeQ[ RealDigits[ # ][ [ 1 ] ], 6 ] && FreeQ[ RealDigits[ # ][ [ 1 ] ], 8 ] && FreeQ[ RealDigits[ # ][ [ 1 ] ], 9 ] && RealDigits[ # ][ [ 1 ] ] == Reverse[ RealDigits[ # ][ [ 1 ] ] ] & ]

Table[FromDigits/@Select[Tuples[{2, 3, 5, 7}, n], #==Reverse[#]&&PrimeQ[ FromDigits[ #]]&], {n, 12}]//Flatten (* Harvey P. Dale, Jun 19 2016 *)

CROSSREFS

Cf. A019546 and A002385.

Sequence in context: A052024 A052023 A052025 * A083183 A046477 A145843

Adjacent sequences:  A045333 A045334 A045335 * A045337 A045338 A045339

KEYWORD

nonn,base

AUTHOR

Robert G. Wilson v, Aug 18 2000

STATUS

approved

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Last modified September 25 11:05 EDT 2018. Contains 315389 sequences. (Running on oeis4.)