84860805domain: NAppears in sequencesApproximation of the 2-adic integer exp(-4) up to 2^n.at n=27A321689Approximation of the 2-adic integer exp(-4) up to 2^n.at n=28A321689Approximation of the 2-adic integer exp(-4) up to 2^n.at n=29A321689