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 A060781 #22 Dec 11 2024 23:41:16
%S A060781 3,12,28,42,12,24,120,195,234,36,84,28,168,24,744,558,234,780,420,672,
%T A060781 288,72,120,1860,1302,840,280,840,360,288,2016,1008,432,432,4368,3458,
%U A060781 1140,840,2520,630,672,1056,924,1092,936,144,1488,7068,1767,2232,3528
%N A060781 a(n) = lcm(sigma(n+1), sigma(n)), where sigma = A000203.
%H A060781 Harry J. Smith, <a href="/A060781/b060781.txt">Table of n, a(n) for n = 1..1000</a>
%H A060781 <a href="/index/Si#SIGMAN">Index entries for sequences related to sigma(n)</a>.
%F A060781 a(n) = lcm(A000203(n+1), A000203(n)).
%t A060781 LCM @@@ Partition[DivisorSigma[1, Range[50]], 2, 1] (* _Amiram Eldar_, Mar 25 2024 *)
%o A060781 (PARI) a(n) = { lcm(sigma(n), sigma(n+1)) } \\ _Harry J. Smith_, Jul 11 2009
%Y A060781 Cf. A000203.
%K A060781 nonn
%O A060781 1,1
%A A060781 _Labos Elemer_, Apr 26 2001
%E A060781 Name corrected by _Amiram Eldar_, Mar 25 2024