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 A165851 #14 Sep 08 2022 08:45:48 %S A165851 1,30,30,900,30,900,30,27000,900,900,30,27000,30,900,900,810000,30, %T A165851 27000,30,27000,900,900,30,810000,900,900,27000,27000,30,27000,30, %U A165851 24300000,900,900,900,810000,30,900,900,810000,30,27000,30,27000,27000 %N A165851 Totally multiplicative sequence with a(p) = 30. %H A165851 G. C. Greubel, <a href="/A165851/b165851.txt">Table of n, a(n) for n = 1..10000</a> %F A165851 a(n) = A009974(A001222(n)) = 30^bigomega(n) = 30^A001222(n). %t A165851 30^PrimeOmega[Range[50]] (* _Harvey P. Dale_, May 04 2015 *) %o A165851 (PARI) a(n) = 30^bigomega(n); \\ _Michel Marcus_, Apr 14 2016 %o A165851 (Magma) [n eq 1 select 1 else 30^(&+[p[2]: p in Factorization(n)]): n in [1..120]]; // _Vincenzo Librandi_, Apr 14 2016 %Y A165851 Cf. A001222, A009974. %K A165851 nonn,mult %O A165851 1,2 %A A165851 _Jaroslav Krizek_, Sep 28 2009