Search: id:A056524
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%I A056524
%S A056524 0,11,22,33,44,55,66,77,88,99,1001,1111,1221,1331,1441,1551,1661,1771,
%T A056524 1881,1991,2002,2112,2222,2332,2442,2552,2662,2772,2882,2992,3003,3113,
%U A056524 3223,3333,3443,3553,3663,3773,3883,3993,4004,4114,4224,4334,4444,4554
%N A056524 Palindromes with even number of digits.
%C A056524 Concatenation of n with reverse of n (keeping leading zeros in the reverse)
%F A056524 a(n) = n*10^A055642(n)+A004086(n)
%Y A056524 Cf. A002113, A004086, A056525, A066492.
%Y A056524 Sequence in context: A014181 A068900 A083852 this_sequence A110745 A020338 
               A052191
%Y A056524 Adjacent sequences: A056521 A056522 A056523 this_sequence A056525 A056526 
               A056527
%K A056524 base,easy,nonn
%O A056524 1,2
%A A056524 Henry Bottomley (se16(AT)btinternet.com), Jun 16 2000

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