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 A330645 #14 Jan 11 2020 21:51:57 %S A330645 0,0,2,2,8,20,60,212,632,2508,8280,34256,127712,542984,2252432, %T A330645 9873216,44557424,202661012,975470880,4627469192,23413518704, %U A330645 116147688600,611882489152,3174544514192,17312022302368,93772475206800,527582381206400,2975078868145952 %N A330645 Number of Young tableaux with n cells whose shape is asymmetric. %F A330645 a(n) = A000085(n) - A067136(n). %F A330645 a(n) = 2*A067142(n). %Y A330645 Cf. A000085, A067136, A067142. %K A330645 nonn %O A330645 0,3 %A A330645 _Omar E. Pol_, Jan 11 2020