-2771

Appears in sequences

• Values of n such that L(11) and N(11) 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=52A227449
• First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 473", based on the 5-celled von Neumann neighborhood.at n=33A272426
• a(n) = - Sum_{d|n} (-n/d)^d * binomial(d+n/d-1, d).at n=19A338683