A083841 - OEIS

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A083841

Palindromic primes p such that p+2 is also a prime: members of A083840 which are the smaller member of a twin prime pair.

3, 5, 11, 101, 191, 10301, 12821, 13931, 16061, 16361, 19991, 72227, 73037, 76367, 77477, 78887, 79397, 79697, 79997, 93239, 94349, 94649, 94949, 97379, 1003001, 1055501, 1129211, 1134311, 1183811, 1186811, 1208021, 1221221, 1262621

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

LINKS

Amiram Eldar, Table of n, a(n) for n = 1..10000 (terms 1..176 from Vincenzo Librandi)

MATHEMATICA

Do[f=(Prime[k] - 2); If[PrimeQ[f] && FromDigits[Reverse[IntegerDigits[f]]]==f, Print[f]], {k, 1, 1000000}] (* Vincenzo Librandi, Jan 09 2018 *)

Select[Partition[Prime[Range[100000]], 2, 1], #[[2]]-#[[1]]==2 && PalindromeQ[ #[[1]]]&][[All, 1]] (* Requires Mathematica version 10 or later *) (* Harvey P. Dale, Mar 30 2018 *)

CROSSREFS

Cf. A083840, A083842.

Sequence in context: A068157 A062530 A089628 * A277552 A154941 A062601

Adjacent sequences: A083838 A083839 A083840 * A083842 A083843 A083844

KEYWORD

base,nonn

AUTHOR

Amarnath Murthy and Meenakshi Srikanth (menakan_s(AT)yahoo.com), May 09 2003

EXTENSIONS

Corrected and extended by Ray Chandler, May 23 2003

STATUS

approved