Central binomial coefficients at triangular positions: a(n) = A000984(n(n+1)/2).

A135757

Central binomial coefficients at triangular positions: a(n) = A000984(n(n+1)/2).

Terms

    a(0) =1a(1) =2a(2) =20a(3) =924a(4) =184756a(5) =155117520a(6) =538257874440

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