a(n) is the number of ways to tile a size n staircase polyomino with staircase polyominoes in the same direction as the size n staircase polyomino.

A335547

a(n) is the number of ways to tile a size n staircase polyomino with staircase polyominoes in the same direction as the size n staircase polyomino.

Terms

    a(0) =1a(1) =2a(2) =5a(3) =18a(4) =94a(5) =709a(6) =7710a(7) =120882a(8) =2732104a(9) =89015152a(10) =4180822859a(11) =283067837700

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