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.
%I A230577 #22 Dec 29 2016 05:19:42 %S A230577 45,63,75,90,99,117,126,147,150,153,171,175,180,198,207,234,243,245, %T A230577 252,261,275,279,294,300,306,325,333,342,350,360,363,369,387,396,414, %U A230577 423,425,468,475,477,486,490 %N A230577 Positive integers that have exactly 6 odd divisors. %C A230577 Numbers that can be formed in exactly 5 ways by summing sequences of 2 or more consecutive integers. %C A230577 Column 6 of A266531. - _Omar E. Pol_, Apr 03 2016 %C A230577 Numbers n such that the symmetric representation of sigma(n) has 6 subparts. - _Omar E. Pol_, Dec 28 2016 %H A230577 Charles R Greathouse IV, <a href="/A230577/b230577.txt">Table of n, a(n) for n = 1..10000</a> %t A230577 Select[Range[500],Count[Divisors[#],_?OddQ]==6&] (* _Harvey P. Dale_, Mar 25 2015 *) %o A230577 (PARI) is(n)=numdiv(n>>valuation(n,2))==6 \\ _Charles R Greathouse IV_, Oct 28 2013 %Y A230577 Cf. A000203, A001227, A077646, A237593, A279387, A266531. %Y A230577 Numbers with k odd divisors (k = 1..10): A000079, A038550, A072502, apparently A131651, A267696, this sequence, A267697, A267891, A267892, A267893. %K A230577 nonn %O A230577 1,1 %A A230577 _Philippe Beaudoin_, Oct 23 2013