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%I #8 Oct 27 2016 03:17:08
%S 2,272,27172,2718172,271828172,27182828172,2718281828172,
%T 271828181828172,27182818281828172,2718281828281828172,
%U 271828182848281828172,27182818284548281828172,2718281828459548281828172,271828182845909548281828172,27182818284590409548281828172
%N Palindromes with odd number of digits formed from the reflected decimal expansion of e.
%C e = 2.71828182845904523536028747135... (see A001113).
%C The number of digits of a(n) is equal to 2n-1.
%H G. C. Greubel, <a href="/A135696/b135696.txt">Table of n, a(n) for n = 1..250</a>
%e n ............ a(n)
%e 1 ............. 2
%e 2 ............ 272
%e 3 ........... 27172
%e 4 .......... 2718172
%e 5 ......... 271828172
%e 6 ........ 27182828172
%e 7 ....... 2718281828172
%e 8 ...... 271828181828172
%e 9 ..... 27182818281828172
%e 10 ... 2718281828281828172
%t nn=20;With[{ed=RealDigits[E,10,nn][[1]]},Table[FromDigits[Join[Take[ ed,n], Reverse[Take[ed,n-1]]]],{n,nn}]] (* _Harvey P. Dale_, Sep 10 2012 *)
%Y Cf. A001113, A002113.
%K base,nonn
%O 1,1
%A _Omar E. Pol_, Mar 01 2008, corrected Mar 02 2008
%E More terms from _Harvey P. Dale_, Sep 10 2012
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