325219domain: NPropertiesPrimalityPrimeyesAppears in sequencesa(n) = a(n-1) + a(n-2) + a(n-3), with a(0) = 0, a(1) = 2, a(2) = 1.at n=22A020992Primes in the tribonacci-like sequence, A020992.at n=5A232498Prime numbersat n=28026