53918domain: NAppears in sequencesDenominators of continued fraction convergents to sqrt(771).at n=11A042487Smallest of 5 consecutive integers divisible respectively by 5 consecutive primes.at n=28A072730G.f.: Sum_{k>=0} A000041(k)^2 * x^k / Sum_{k>=0} A000009(k)^2 * x^k.at n=20A304989