47379

Appears in sequences

• Numbers n such that Catalan(n)-1 is prime.at n=42A053427
• Expansion of g.f.: Product_{n>0} 1/(1 - 2^(n-1)*x^n).at n=13A075900
• Numbers k such that A014138(k+1) (the partial sum of the first k Catalan numbers, starting 1, 2, 5, ...) is a prime.at n=14A126807
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 613", based on the 5-celled von Neumann neighborhood.at n=34A273243