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%I #14 Apr 18 2021 02:38:58
%S 10,14,18,38,48,52,54,58,60,70,76,80,82,86,92,94,96,98,112,114,124,
%T 132,136,138,140,142,144,158,170,174,180,192,194,198,234,236,252,254,
%U 258,290,306,318,320,324,326,342,348,350,352,356,364,366,368,370,374,376
%N Even numbers k such that k and prime(k) have the same number of even digits.
%C Can this sequence be proved to be infinite?
%e 10 is a term: prime(10)=29, and 10 and 29 each have 1 even digit.
%e 14 is a term: prime(14)=43, and 14 and 43 each have 1 even digit.
%e 18 is a term: prime(18)=61, and 18 and 61 each have 1 even digit.
%e 124 is a term: prime(124)=683, and 124 and 683 each have 2 even digits.
%Y Cf. A000027, A000040, A155548, A196563.
%K nonn,base,less
%O 1,1
%A _Juri-Stepan Gerasimov_, Feb 24 2009
%E Roughly 50 percent of the entries corrected by _R. J. Mathar_, Feb 26 2009
%E Edited by _Jon E. Schoenfield_, Apr 18 2021