Expansion of an integral: central elements of rows of triangle in A059366.

A001757

Expansion of an integral: central elements of rows of triangle in A059366.

Terms

    a(0) =1a(1) =1a(2) =2a(3) =9a(4) =54a(5) =450a(6) =4500a(7) =55125a(8) =771750a(9) =12502350a(10) =225042300a(11) =4538353050a(12) =99843767100

External references