7971615

Appears in sequences

• Largest order of automorphism group of a tournament with n nodes.at n=31A000198
• a(n) = 5*3^n.at n=13A005030
• Triangle whose (i,j)-th entry is binomial(i,j)*9^(i-j)*9^j.at n=23A038299
• Triangle whose (i,j)-th entry is binomial(i,j)*9^(i-j)*9^j.at n=25A038299
• Number of divisors (A000005) of the Wonderful Demlo numbers A002477.at n=41A063750
• Number of ternary trees (A001764) with n nodes and maximal diameter.at n=13A064017
• a(n) = a(n-1) + a(n-2) + gcd(a(n-1), a(n-2)) for n > 1; a(0)=1, a(1)=1.at n=29A083658
• a(n) = 3*a(n-2) for n > 2; a(1) = 5, a(2) = 3.at n=26A162813
• a(n) = 3*a(n-2) for n > 2; a(1) = 1, a(2) = 5.at n=27A166465
• (n-1)-st elementary symmetric function of the first n terms of the periodic sequence (3,1,3,1,3,1,3,1,...).at n=22A203231
• G.f.: (1+x+x^2+2*x^5-2*x^10)/(1-3*x^3).at n=44A213933
• a(n) is the first number == 1 (mod n) that is the product of n primes, counted by multiplicity.at n=13A368217