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 A118659 #13 Oct 05 2021 22:27:29 %S A118659 6,11,16,20,25,29,33,36,41,45,49,52,57,61,65,68,72,75,80,84,88,91,95, %T A118659 98,102,105,108,113,117,121,124,128,131,135,138,141,146,150,154,157, %U A118659 161,164,168,171,174,178,181,184,189,193,197,200,204,207,211,214,217,221,224 %N A118659 Minimum number of unit faces required to construct n unit cubes. %F A118659 a(n^3) = 3*(n^2)*(n+1) = A270205(n+1). - _Mohammed Yaseen_, Aug 22 2021 %e A118659 a(2)=11 because 6 unit faces are required to construct each cube but 1 face is shared. I.e., a(2)=6+5=11. %Y A118659 Cf. A117227, A270205. %K A118659 easy,nonn %O A118659 1,1 %A A118659 _Ron R. King_, May 18 2006 %E A118659 Missing term a(56)=214 inserted by _Mohammed Yaseen_, Aug 22 2021