Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).
%I #5 Sep 05 2020 15:53:17
%S 1,0,0,0,0,0,0,0,0,0,1,1,1,1,1,1,1,1,1,0,0,2,0,0,0,0,0,0,0,0,0,0,0,2,
%T 0,0,0,0,0,0,0,0,0,0,0,2,0,0,0,0,0,0,0,0,0,0,0,2,0,0,0,0,0,0,0,0,0,0,
%U 0,0,1,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0
%N Exponent of highest power of 11 dividing the n-th decimal palindrome; a(0) = 1.
%t IntegerExponent[#,11]&/@Select[Range[0,1000],PalindromeQ]/.\[Infinity]->1 (* Requires Mathematica version 10 or later *) (* _Harvey P. Dale_, Sep 05 2020 *)
%Y Cf. A083851, A083852, A002113, A008593.
%K nonn,base
%O 0,22
%A _Reinhard Zumkeller_, May 06 2003