14780480domain: NAppears in sequencesAlmost trivalent maps.at n=9A002012a(n) = Product_{ceiling(n/2) <= k <= n, gcd(k,n)=1} k.at n=20A124442Denominators of constants A(a) related to the asymptotic LCM of arithmetic progressions a*n+b (a and b coprime).at n=20A249226a(0) = 1; for n >= 1, a(n) = A059897(n, a(n-1)).at n=19A284567