A180421 Members p of A091366 such that digit-reverse(p) is also in A091366.

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

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: A091366 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