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 A179478 #4 Jun 02 2025 03:01:30 %S A179478 1,2,2,6,6,12,6,18,18,6,6,6,12,12,12,6,6,6,30,30,30,18,30,6,18,6,18, %T A179478 24,18,12,6,18,6,24,12,48,24,6,12,30,18,12,24,18,30,6,12,30,54,12,54, %U A179478 6,24,30,42,18,12,36,6,6,12,24,18,12,6,6,12,12,18,24,6,12,6,12,30,48,24,24 %N A179478 a(n) = sqrt(A073609(n+1)-A073609(n)). %C A179478 After 1,1,2, all terms are multiples of 6. %Y A179478 Cf. A073609 a(0)=2, a(n) for n>0 is the smallest prime>a(n-1) that differs from a(n-1) by a square. %K A179478 nonn %O A179478 0,2 %A A179478 _Zak Seidov_, Jul 16 2010