-1891

Appears in sequences

• Row sums of a number triangle related to the Pell numbers.at n=43A110331
• First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 105", based on the 5-celled von Neumann neighborhood.at n=25A270163
• First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 329", based on the 5-celled von Neumann neighborhood.at n=23A271276
• First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 453", based on the 5-celled von Neumann neighborhood.at n=25A272276
• First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 505", based on the 5-celled von Neumann neighborhood.at n=27A272584
• First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 507", based on the 5-celled von Neumann neighborhood.at n=27A272588
• Expansion of 1/(1 + x*Product_{k>=1} 1/(1 - x^k)).at n=33A318581
• Dirichlet g.f.: zeta(s) / (zeta(s-1) * zeta(s-2)).at n=42A351654