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 A123802 #7 Feb 15 2025 15:30:57 %S A123802 1,32,3292,401408,53855801,7664347918 %N A123802 Number of ways, counted up to symmetry, to build a contiguous building with n LEGO blocks of size 1 X 7. %Y A123802 Cf. A112389, A123762 - A123827, A123829 - A123849. %K A123802 nonn,hard %O A123802 1,2 %A A123802 _Søren Eilers_, Oct 29 2006