15471286560domain: NAppears in sequencesBinomial coefficient C(2n,n-4).at n=15A004310Binomial coefficient C(38,n).at n=15A010954Binomial coefficient C(38,n).at n=23A010954a(n) = binomial(n,15).at n=23A010968Binomial coefficient C(n,23).at n=15A010976a(n) = binomial(n, floor((n-8)/2)).at n=38A037958