Trisection of A000984 (central binomial coefficients): binomial(2(3n+2),3n+2)/3!, n>=0.

A187365

Trisection of A000984 (central binomial coefficients): binomial(2(3n+2),3n+2)/3!, n>=0.

Terms

    a(0) =1a(1) =42a(2) =2145a(3) =117572a(4) =6686100a(5) =388934370a(6) =22974421470

External references