43239

Appears in sequences

• Triangle T(n,k) of series-reduced (or homeomorphically irreducible) labeled graphs with n nodes and k edges, k=0..binomial(n,2).at n=57A060514
• a(n) = n*(n+1)*(2*n+1)*(n^2+n+3)/30.at n=14A061927
• Number of positions of the Rubik's cube at a distance of n moves from the solved state, in the half-turn metric.at n=4A080601
• Number of partitions of n into Fibonacci parts if each part is of two kinds.at n=28A103577
• Least k such that the sum of the semiprime divisors equals n times the sum of the prime divisors, or 0 if no such k exists.at n=26A227419
• Numbers n such that F(n) - n is a prime, where F(n) denotes the n-th Fibonacci number.at n=14A270821
• Numbers k such that (58*10^k + 419)/9 is prime.at n=21A294526
• Numbers k such that A360331(k) = A360331(k+1).at n=18A360359