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.

A134682 Smallest number such that in base 10 the concatenation of its divisors has n digits.

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%I A134682 #11 Feb 21 2025 08:23:22
%S A134682 1,2,4,6,10,16,12,20,44,24,30,36,102,48,80,112,72,60,108,132,200,220,
%T A134682 192,144,320,120,216,210,312,180,252,690,300,468,240,336,432,528,576,
%U A134682 816,1104,1040,360,504,420,540,600,660,1056,1020,1380,1296,2052,900
%N A134682 Smallest number such that in base 10 the concatenation of its divisors has n digits.
%C A134682 a(n) = Min{m: A134681(m) = n}.
%o A134682 (PARI) a(n) = my(k=1); while (sumdiv(k, d, #digits(d)) != n, k++); k; \\ _Michel Marcus_, Feb 21 2025
%Y A134682 Cf. A037278, A055642, A134681, A027750.
%K A134682 nonn,base
%O A134682 1,2
%A A134682 _Reinhard Zumkeller_, Nov 06 2007