87377

Appears in sequences

• a(n) = Sum_{j=1..n} j*prime(j).at n=39A014285
• a(n) = Sum_{k=0..floor(n/2)} T(n,k), T given by A026725.at n=16A026733
• Expansion of (1+2x)^2/((1-x^2)(1-2x)).at n=14A085278
• Triangle generated by T(n,k) = q^k*T(n-1, k) + T(n-1, k-1), with q=4.at n=43A176244
• Decimal representation of the x-axis, from the left edge to the origin, of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 297", based on the 5-celled von Neumann neighborhood.at n=32A280614
• Numerator of the barycenter of first n primes defined as a(n) = numerator(Sum_{i=1..n} (i*prime(i)) / Sum_{i=1..n} prime(i)).at n=39A306834