-3863

Appears in sequences

• Expansion of e.g.f. cos(x/cos(x)) (even powers only).at n=4A009118
• E.g.f. exp(x/cosh(x)).at n=8A009301
• First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 467", based on the 5-celled von Neumann neighborhood.at n=41A272321
• Dirichlet convolution of Fibonacci numbers with A349452 (Dirichlet inverse of A011782, 2^(n-1)).at n=12A349565