79056

Appears in sequences

• a(n) = (18^n - (-6)^n)/24.at n=5A099139
• Numbers k such that phi(k) + k is a fourth power.at n=29A114072
• a(n) = 61*n^2.at n=36A174333
• Numbers with 50 divisors.at n=18A175756
• Numbers with prime factorization pq^4r^4.at n=17A190012
• (n-1)-st elementary symmetric function of the first n terms of (1,2,3,1,2,3,1,2,3,...).at n=15A203162
• p-INVERT of the odd positive integers, where p(S) = 1 + S - 2 S^2.at n=11A292491
• Number of unlabeled nonempty hypertrees with up to n vertices and no singleton edges.at n=13A304937
• a(n) = coefficient of x^n*y^(n+1)/n! in log( Sum_{n>=0} (n^2 + n*y + y^2)^n * x^n/n! ).at n=5A319834
• Numbers m such that sigma(m)*tau(m) is a square but sigma(m)/tau(m) is not an integer.at n=24A327831
• Positive integers representable by the two cyclotomic binary forms Phi_5(x,y) and Phi_12(u,v).at n=21A345894
• Numbers that have exactly two exponents in their prime factorization that are equal to 4.at n=25A386805