205222domain: NAppears in sequencesa(n) = a(n-2) + a(n-3) + a(n-4), with initial values a(0) = 0, a(1) = 2, a(2) = 3, a(3) = 6.at n=31A001634Number of base 12 circular n-digit numbers with adjacent digits differing by 9 or less.at n=5A125469Composite numbers k such that k+A055012(k) is the cube of a prime.at n=6A328293