98672427616domain: NAppears in sequencesBinomial coefficient C(2n,n-6).at n=15A004312Binomial coefficient C(42,n).at n=15A010958a(n) = binomial(n,27).at n=15A010980Staircase on Pascal's triangle.at n=27A081181Staircase on Pascal's triangle.at n=27A081205