Number of standard Young tableaux with n cells and exactly three successions.

A241774

Number of standard Young tableaux with n cells and exactly three successions.

Terms

    a(0) =1a(1) =2a(2) =9a(3) =29a(4) =108a(5) =399a(6) =1573a(7) =6249a(8) =25642a(9) =107751a(10) =466898a(11) =2071183a(12) =9429453a(13) =43889227a(14) =209111720a(15) =1017353435a(16) =5056450994a(17) =25627110560a(18) =132451351403a(19) =697165582228

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