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%I #20 Oct 05 2023 18:03:15
%S 0,1,2,3,4,5,6,7,8,9,11,22,33,44,55,66,77,88,99,101,202,303,404,505,
%T 606,707,808,909,1001,2002,3003,4004,5005,6006,7007,8008,9009,10001,
%U 20002,30003,40004,50005,60006,70007,80008,90009,100001,200002,300003,400004
%N Palindromes with either no internal digits or all internal digits are 0.
%C How is this sequence obtained from the given formula? What values for k are used? In particular, how are the terms a(1)-a(10) obtained using this formula? Using an inner loop for m and an outer loop for k, starting at m=1 and k=1, one obtains the infinite subsequence starting 11, 22, 33, 44, .... - _Felix Fröhlich_, Jul 26 2014
%C Answer, maybe: The formula is only supposed to produce the terms with more than one digit? - _N. J. A. Sloane_, Jul 27 2014
%H Harvey P. Dale, <a href="/A109882/b109882.txt">Table of n, a(n) for n = 1..1000</a>
%F The single-digit numbers, and then m*10^k + a where m is 1 to 9. [Revised by _N. J. A. Sloane_, Jul 27 2014]
%t Join[Range[0,9],10#+First[IntegerDigits[#]]&/@Flatten[Table[FromDigits[PadRight[{d},n,0]],{n,5},{d,9}]]] (* _Harvey P. Dale_, Oct 05 2023 *)
%K base,nonn
%O 1,3
%A _Amarnath Murthy_, Jul 10 2005
%E Corrected definition, fixed offset, extended. - _David Wasserman_, Oct 15 2008
%E 0 added and name changed by Arkadiusz Wesolowski, Sep 07 2011