69865domain: NAppears in sequencesa(n) = T(2*n, n), where T is given by A026519.at n=9A026525a(n) = T(n, floor(n/2)), T given by A026519.at n=18A026530a(n) = T(n, floor(n/2)), T given by A026536.at n=18A026547Number of ordered triples (w,x,y) with all terms in {-n,...-1,1,...,n} and w+2x+3y>0.at n=26A211621