704861domain: NPropertiesPrimalityPrimeyesAppears in sequencesa(n) = a(n-1) + Sum_{k=0..n/3} a(n-3k) with a(0)=1.at n=32A113435Third row of A113435.at n=10A113438E.g.f. satisfies A(x) = exp(x + x^3/6 * A(x)).at n=10A362381Prime numbersat n=56918