43183019880domain: NAppears in sequencesBinomial coefficient C(3n,n-9).at n=10A004327a(n) = binomial coefficient C(n,47).at n=10A011000Binomial coefficients C(57,n).at n=10A017773Column 0 of triangle A107870; a(n) = C( n*(n-1)/2 + n+2, n).at n=10A107871Binomial coefficients C(2*n-9,10).at n=23A196790