36576848168domain: NAppears in sequencesBinomial coefficient C(43,n).at n=13A010959Binomial coefficient C(n,30).at n=13A010983a(n) = Sum_{j=1..floor(n/2)} binomial(n+j-1,j-1).at n=28A175167a(n) = binomial(3n+1, n-1).at n=13A236194