Search: id:A128827
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%I A128827
%S A128827 1,4,8,9,121,343,484,676,1331,1521,1681,4624,5625,9409,10201,11881,
%T A128827 12321,14161,14641,16641,17161,19321,19881,21952,40804,43264,44944,
%U A128827 47524,49284,50625,55225,60516,64516,65536,69696,79507,91809,94249
%N A128827 Perfect powers beginning and ending with the same digit.
%e A128827 97^2 = 9409 is a term; 43^3 = 79507 is a term.
%o A128827 (MAGMA) PP:=[1] cat [ n: n in [2..100000] | IsPower(n) ]; [ n: n in PP 
               | k[1] eq k[ #k] where k is Intseq(n, 10) ]; /* Klaus Brockhaus, 
               Apr 16 2007 */
%Y A128827 Cf. A001597 (perfect powers), A075786 (palindromic perfect powers), A129450.
%Y A128827 Sequence in context: A098128 A118895 A110811 this_sequence A075786 A046450 
               A077271
%Y A128827 Adjacent sequences: A128824 A128825 A128826 this_sequence A128828 A128829 
               A128830
%K A128827 nonn,base
%O A128827 1,2
%A A128827 J. M. Bergot (thekingfishb(AT)yahoo.ca), Apr 12 2007
%E A128827 Edited, corrected and extended by Klaus Brockhaus (klaus-brockhaus(AT)t-online.de), 
               Apr 16 2007

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