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 A375132 #4 Jul 31 2024 11:26:15 %S A375132 1,1,2,6,21,101,591,4168,32754,282605 %N A375132 Number of nonaligned trivalent dissections of a rectangle into n rectangles. %D A375132 J. P. Steadman, Architectural Morphology, Pion Limited, 1983. See Table 5.2 on p. 59. %Y A375132 Cf. A049021, A340984, A342141, A375129, A375130, A375131. %K A375132 nonn,more %O A375132 1,3 %A A375132 _Andrey Zabolotskiy_, Jul 31 2024