Number of minimax trees on n nodes.

Terms

a(0) =1a(1) =1a(2) =4a(3) =20a(4) =128a(5) =1024a(6) =9856a(7) =110720a(8) =1421312a(9) =20525056a(10) =329334784a(11) =5812797440a(12) =111923560448