Binomial(2k,k) when the first digit of binomial(2k,k) is 1.

A068359

Binomial(2k,k) when the first digit of binomial(2k,k) is 1.

Terms

    a(0) =1a(1) =12870a(2) =184756a(3) =10400600a(4) =155117520a(5) =137846528820

External references