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%I #11 Jul 28 2021 04:21:40
%S 1,7,19,25,31,49,61,65,71,77,101,103,107,121,125,133,139,149,157,169,
%T 173,193,205,221,233,245,295,349,359,371,385,391,413,425,431,445,457,
%U 463,479,481,517,527,533,553,575,583,587,593,605,611,617,637,641,643
%N Numbers k such that k concatenated with k+2 is a lucky number.
%Y Cf. A000959, A032652.
%K nonn,base
%O 1,2
%A _Patrick De Geest_, May 15 1998
%E More terms from _Sascha Kurz_, Mar 24 2002
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