77490641domain: NAppears in sequencesa(n) is the total number of rows of circles of radius r packing into a circle of radius R, where r = R/2^n.at n=26A239206Greatest integer k such that k/2^n < sqrt(1/3).at n=27A293327The integer k that minimizes |k/2^n - sqrt(1/3)|.at n=27A293329