-5039

Appears in sequences

• Primes or negative values of primes in the sequence b(n) = 47*n^2 - 1701*n + 10181, n >= 0.at n=20A050267
• a(n) = Sum_{k|n} k!*mu(k), where mu() is the Moebius function.at n=6A099740
• a(n)=1-4*n-4*n^2.at n=35A184882
• Primes or negative values of primes of the form 59*n^2 - 1873*n + 8941 for n>=0.at n=12A217604
• Values of n such that L(2) and N(2) are both prime, where L(k) = (n^2+n+1)*2^(2*k) + (2*n+1)*2^k + 1, N(k) = (n^2+n+1)*2^k + n.at n=48A226922
• First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 261", based on the 5-celled von Neumann neighborhood.at n=35A271064
• a(n) = n! * Sum_{d|n} mu(n/d) / d!.at n=6A354022
• Triangle read by rows: T(n,k) = (-1)^n * n! + (-1)^(k+1) * k! for n >= 2 and 1 <= k <= n-1.at n=15A373967