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.

A182623 Numbers n with property that there is a number m such that if we concatenate the binary representations of the divisors of m in increasing order we get the binary representation of n.

This page as a plain text file.
%I A182623 #10 Mar 30 2012 17:34:04
%S A182623 1,6,7,13,15,27,29,49,51,52,55,61,63,101,105,107,111,117,121,123,125,
%T A182623 195,199,201,207,211,217,222,225,229,231,235,237,241,255,387,393,395,
%U A182623 405,407,413,419,423,429,435,437,441,447,449,453,455,467,479,483,485,489,495,497,507,769,775,781,783,789
%N A182623 Numbers n with property that there is a number m such that if we concatenate the binary representations of the divisors of m in increasing order we get the binary representation of n.
%C A182623 Numbers of A182622 in increasing order (without repetitions).
%e A182623 858 written in base 2 is 1101011010. The string "1101011010" may be broken up into four parts (1, 10, 101, 1010) that are also the binary representations of a sequence of numbers in increasing order: 1, 2, 5, 10. These numbers are the divisors of 10. Then 858 is in the sequence.
%Y A182623 Cf. A007088, A027750, A182620, A182621, A182622, A182624.
%K A182623 nonn,base
%O A182623 1,2
%A A182623 _Omar E. Pol_, Nov 23 2010