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A180421 Members p of A091366 such that digit-reverse(p) is also in A091366. 1
11, 101, 113, 131, 151, 199, 311, 337, 353, 359, 373, 733, 757, 919, 953, 991, 1031, 1103, 1213, 1217, 1231, 1237, 1259, 1301, 1321, 1381, 1439, 1471, 1499, 1619, 1723, 1741, 1831, 1949, 3011, 3019, 3109, 3121, 3163, 3257, 3271, 3299, 3347, 3527, 3583, 3613, 3767 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Robert Israel, Table of n, a(n) for n = 1..10000

FORMULA

{A091366(i): A004086(A091366(i)) in A091366}.

EXAMPLE

a(10) = A091366(19) = 359 and reverse(359) = 953 = A091366(42) is again in A091366.

MAPLE

filter:= proc(n) local i, L, d, y;

  if not isprime(n) then return false fi;

  L:= convert(n, base, 10);

  d:= nops(L);

  isprime(add(L[i]^3, i=1..d)) and isprime(add(L[-i]*10^(i-1), i=1..d))

end proc:

select(filter, [seq(i, i=3..10000, 2)]); # Robert Israel, Apr 06 2021

CROSSREFS

Cf. A091366

Sequence in context: A158051 A073064 A155075 * A176179 A176196 A303570

Adjacent sequences:  A180418 A180419 A180420 * A180422 A180423 A180424

KEYWORD

nonn,base

AUTHOR

Carmine Suriano, Sep 03 2010

EXTENSIONS

Keyword:base added and definition shortened by R. J. Mathar, Sep 23 2010

STATUS

approved

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Last modified April 22 10:28 EDT 2021. Contains 343174 sequences. (Running on oeis4.)