A084991 Palindromes which can be written as a sum of two prime numbers.

4, 5, 6, 7, 8, 9, 22, 33, 44, 55, 66, 88, 99, 111, 141, 151, 181, 202, 212, 222, 232, 242, 252, 262, 272, 282, 292, 313, 333, 404, 414, 424, 434, 444, 454, 464, 474, 484, 494, 505, 525, 565, 595, 606, 616, 626, 636, 646, 656, 666, 676, 686, 696, 808, 818, 828, 838, 848, 858, 868, 878, 888, 898, 909, 939, 949, 969, 979, 999

Offset: 1

Author

Meenakshi Srikanth (menakan_s(AT)yahoo.com), Jun 27 2003

Keywords

• nonn
• base

Examples

			E.g. 181 is a palindrome and is 179 + 2. 179 and 2 are both prime.
		

Crossrefs

Cf. A014091.

Programs

Mathematica

With[{upto=1000},Select[Select[Union[Total/@Tuples[Prime[ Range[ upto]],2]],# == IntegerReverse[#]&],#<=upto&]] (* Harvey P. Dale, Nov 24 2017 *)

Extensions

More terms from Harvey P. Dale, Nov 24 2017