-2441

Appears in sequences

• Expansion of g.f. 1/(1 - x + 2*x^3 + x^4).at n=20A112518
• The arithmetic mean of (2k+1)(-1)^k*A_k (k=0,...,n-1), where A_0, A_1,... are Apéry numbers given by A005259.at n=3A178791
• Values of n such that L(15) and N(15) 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=30A227518
• First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 145", based on the 5-celled von Neumann neighborhood.at n=25A270289
• E.g.f.: exp(-Sum_{n>=1} A050999(n) * x^n).at n=5A294461