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 A060779 #16 Jan 27 2025 15:14:04 %S A060779 2,2,6,6,4,4,4,12,12,4,6,6,4,4,20,10,6,6,6,12,4,4,8,24,12,4,12,6,8,8, %T A060779 6,12,4,4,36,18,4,4,8,8,8,8,6,6,12,4,10,30,6,12,12,6,8,8,8,8,4,4,12, %U A060779 12,4,12,42,28,8,8,6,12,8,8,12,12,4,12,6,12,8,8,10,10,20,4,12,12,4,4,8,8,12 %N A060779 a(n) = lcm(tau(n+1), tau(n)), where tau = A000005. %H A060779 Harry J. Smith, <a href="/A060779/b060779.txt">Table of n, a(n) for n = 1..1000</a> %F A060779 a(n) = lcm(A000005(n+1), A000005(n)). %t A060779 LCM@@#&/@Partition[DivisorSigma[0,Range[90]],2,1] (* _Harvey P. Dale_, Jan 27 2025 *) %o A060779 (PARI) a(n) = { lcm(numdiv(n), numdiv(n+1)) } \\ _Harry J. Smith_, Jul 11 2009 %Y A060779 Cf. A057921, A000005. %K A060779 nonn %O A060779 1,1 %A A060779 _Labos Elemer_, Apr 26 2001