-2507

Appears in sequences

• Reversion of Jacobsthal numbers A001045.at n=12A091593
• First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 433", based on the 5-celled von Neumann neighborhood.at n=35A272148
• First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 485", based on the 5-celled von Neumann neighborhood.at n=29A272505
• E.g.f.: Product_{k>=1} (1 + x^k)^(cos(x)/k).at n=8A347899