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 A373927 #8 Jul 07 2024 13:14:42 %S A373927 16,80,106,132 %N A373927 a(n) is the minimum number of hypercubes needed to admit a hole of size n in the 4D tesseractic honeycomb. %e A373927 16 hypercubes surround a single vertex so a(0) = 16. %e A373927 A 3 X 3 X 3 X 3 hypercube will admit a single hole in its center, so a(1) = 3*3*3*3 - 1 = 80. %Y A373927 Cf. A345205 (3D equivalent), A235382 (2D equivalent). %K A373927 nonn,more %O A373927 0,1 %A A373927 _Abraham Maxfield_, Jun 22 2024