7575968400domain: NAppears in sequencesBinomial coefficient C(4n,n-5).at n=9A004335a(n) = binomial coefficient C(n,47).at n=9A011000Binomial coefficients C(56,n).at n=9A017772Binomial coefficients C(2*n-8,9).at n=23A053131Column 1 of triangle A107870; a(n) = C(n*(n+1)/2 + n+2, n).at n=9A107872