1072693248domain: NAppears in sequencesa(n) = 4^n * (2^n - 1).at n=10A059409Jordan function J_10(n).at n=7A069095Number of subsets of {1,..,n} containing at least one prime.at n=29A089820a(n) = 2^n - 2^floor(2n/3).at n=30A291779