77513

Properties

Appears in sequences

• Expansion of x^4*(1-7*x+17*x^2-18*x^3+11*x^4-5*x^5)/((1-x)^2*(1-3*x)^2*(1-3*x+x^2)^2).at n=12A219756
• Primes p such that q = p^2 - 2, r = q^2 - 2 and s = r^2 - 2 are also prime.at n=9A257552
• Number of ordered rooted trees with 2n non-root nodes such that the maximal outdegree equals n.at n=7A291662
• Number of ordered rooted trees with n non-root nodes such that the maximal outdegree equals ceiling(n/2).at n=14A303259
• Prime numbersat n=7615