123535domain: NAppears in sequencesNumbers n such that A242720(n) = prime(n)*(prime(n)+4)+3 and A242719(n) - A242720(n) = 2*(prime(n)-1).at n=23A247279Number of triples (i,j,k) such that i+j+k > 0 with -n <= i,j,k <= n.at n=31A302302E.g.f. A(x) satisfies: 1 = Sum_{n>=0} 3^n * (exp(n*x) - A(x))^n / n!.at n=5A353740