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 A145108 #6 Apr 14 2015 11:41:02 %S A145108 4,8,16,32,64,108,128,256,324,512,648,972,1024,1944,2048,2916,3888, %T A145108 4096,5832,8192,8748,11664,16384,17496,23328,26244,32768,34992,52488, %U A145108 65536,67500,69984,78732,104976,131072,139968,157464,209952,236196,262144 %N A145108 Multiples of 4 that are primally tight and have strictly ascending powers. %C A145108 All numbers of the form 2^k0*p_1^k1*p_2^k2*...*p_n^k_n, where 2 <= k0 < k1 < k2 < ... < k_n and the p_i are n successive primes. %C A145108 Subset of A073491, A133808, A133809, A133810 and A133811. %H A145108 Reinhard Zumkeller, <a href="/A145108/b145108.txt">Table of n, a(n) for n = 1..10000</a> %o A145108 (Haskell) %o A145108 a145108 n = a145108_list !! (n-1) %o A145108 a145108_list = filter ((== 0) . (`mod` 4)) a133809_list %o A145108 -- _Reinhard Zumkeller_, Apr 14 2015 %Y A145108 Cf. A025487, A087980, A073491, A133808, A133809, A133810, A133811, A133812, A133813. %Y A145108 Cf. A008586. %K A145108 nonn %O A145108 1,1 %A A145108 _Reikku Kulon_, Oct 02 2008