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Numbers that are the sum of two reversed consecutive primes.
1

%I #17 May 12 2024 10:09:17

%S 5,8,12,18,42,48,54,86,87,92,93,102,105,108,109,111,123,124,130,134,

%T 135,136,162,177,180,246,258,282,294,303,372,402,426,434,450,456,468,

%U 470,492,504,528,542,564,576,582,588,774,812,816,828,846,852,862,866

%N Numbers that are the sum of two reversed consecutive primes.

%C Subsequence of A162706.

%C Numbers of the form A004087(j)+A004087(j+1), any j. - _R. J. Mathar_, Jul 11 2009

%e 109 is in the list because it is the sum of R(47)+R(53)=74+35=109.

%t Take[Union[Total[IntegerReverse[#]]&/@Partition[Prime[Range[500]],2,1]],100] (* The program is not suitable for more than 100 or so terms. *) (* _Harvey P. Dale_, Apr 26 2022 *)

%Y Cf. A004087, A162706.

%K nonn,base

%O 1,1

%A _Claudio Meller_, Jul 11 2009

%E 4 removed, keyword:base added by _R. J. Mathar_, Jul 13 2009