83659domain: NAppears in sequencesSum of the first n n-digit primes less n*10^(n-1).at n=40A114053Solution of the complementary equation a(n) = 3*a(n-1) + b(n-1), where a(0) = 1, a(1) = 2, b(0) = 3, and (a(n)) and (b(n)) are increasing complementary sequences.at n=10A295133