59345

Appears in sequences

• Ramanujan's approximation to population of x^2 + y^2 <= 2^n.at n=18A000691
• Number of dissections of a convex (n+2)-gon into triangles and quadrilaterals by nonintersecting diagonals.at n=9A001002
• Sum of numbers that can be written as t*n + u*(n+1) for nonnegative integers t,u in exactly five ways.at n=9A076458
• Convoluted convolved Fibonacci numbers G_j^(10).at n=9A089097
• Sign twisted convoluted convolved Fibonacci numbers H_j^(10).at n=9A089106
• Triangle T(n,m) read by rows, [A(x)]^m = Sum_{n>=m} T(n,m)*x^n, where A(x) satisfies A(x) = x/(1-A(x)-A(x)^2).at n=45A188111
• a(n) is obtained by applying the map k -> composite(k) n times, starting at n.at n=42A280327
• Square array T(n,k), n >= 0, k >= 0, read by antidiagonals downwards, where T(n,0) = 0^n and T(n,k) = k * Sum_{r=0..n} binomial(n+r+k,r) * binomial(r,n-r)/(n+r+k) for k > 0.at n=64A378289
• Tetraprimes (or products of exactly four distinct prime numbers) that are the sum of two successive tetraprimes.at n=29A380348