67255063876domain: NAppears in sequencesSecondary root edges in doubly rooted tree maps with n edges.at n=11A046715a(n) = binomial(m+n-1,n)^2 - binomial(m+n,n+1)*binomial(m+n-2,n-1) with m=12.at n=12A140925a(n) = binomial(m+n-1,n)^2 - binomial(m+n,n+1)*binomial(m+n-2,n-1) with m = 14.at n=10A169937