cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A214558 Subsequence of fixed points A099009 of the Kaprekar mapping with numbers of the form 8(x1+1)//7(2*x2)//6(x1+1)//5(x2)//4(x1+x2+1)//3(x2)//2(x1+x2)//1//9(x1+2*x2+1)//7(x1+x2+1)//6(x2)//5(x1+x2+1)//4(x2)//3(x1+1)//2(2*x2)//1(x1)//2.

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%I A214558 #15 Jul 23 2012 15:46:06
%S A214558 864197532,886644219977553312,87765443219997765543222,
%T A214558 888666444221999777555333112,88776654443221999977765554332212
%N A214558 Subsequence of fixed points A099009 of the Kaprekar mapping with numbers of the form 8(x1+1)//7(2*x2)//6(x1+1)//5(x2)//4(x1+x2+1)//3(x2)//2(x1+x2)//1//9(x1+2*x2+1)//7(x1+x2+1)//6(x2)//5(x1+x2+1)//4(x2)//3(x1+1)//2(2*x2)//1(x1)//2.
%C A214558 The sign // denotes concatenation of digits in the definition, and d(x) denotes x repetitions of d, x>=0.
%H A214558 Syed Iddi Hasan, <a href="/A214558/b214558.txt">Table of n, a(n) for n = 0..92</a>
%F A214558 If d(x) denotes x repetitions of the digit d, then a(n)=8(x1+1)7(2*x2)6(x1+1)5(x2)4(x1+x2+1)3(x2)2(x1+x2)19(x1+2*x2+1)7(x1+x2+1)6(x2)5(x1+x2+1)4(x2)3(x1+1)2(2*x2)1(x1)2, where x1,x2>=0.
%e A214558 886644219977553312 is a fixed point of the mapping for x1=1, x2=0.
%Y A214558 Cf. A214555, A214556, A214557, A214559.
%K A214558 nonn,base
%O A214558 0,1
%A A214558 _Syed Iddi Hasan_, Jul 20 2012