48887

Appears in sequences

• a(n) = 2nd elementary symmetric function of {1, prime(1), prime(2), ..., prime(n-1)}, where prime(0) = 1.at n=14A024522
• a(n) = 3*(10^n) + (n^2 + 1)*(10^n - 1)/9.at n=4A137215
• G.f.: Product_{k>=1} 1/(1-x^k)^Fibonacci(k+2).at n=13A260787
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 619", based on the 5-celled von Neumann neighborhood.at n=34A273252