28781143380domain: NAppears in sequencesBinomial coefficients C(2n, n-2).at n=17A002694Binomial coefficient C(38,n).at n=17A010954Binomial coefficient C(38,n).at n=21A010954a(n) = binomial(n,17).at n=21A010970a(n) = binomial(n,21).at n=17A010974T(2n+4,n), array T as in A050186; a count of aperiodic binary words.at n=17A051197