Self-convolution square-root of A005810, where A005810(n) = binomial(4*n,n).

A208977

Self-convolution square-root of A005810, where A005810(n) = binomial(4*n,n).

Terms

    a(0) =1a(1) =2a(2) =12a(3) =86a(4) =666a(5) =5388a(6) =44832a(7) =380424a(8) =3275172a(9) =28512248a(10) =250413856a(11) =2215112886a(12) =19711078686a(13) =176276723508

External references