34947

Appears in sequences

• Number of ordered triples (i,j,k) with |i| + |j| + |k| <= n and gcd(i,j,k) <= 1.at n=31A100450
• Numbers k such that sigma(k)*k is a triangular number.at n=31A115909
• a(n) = 289*n^2 - 2*n.at n=10A158252
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 841", based on the 5-celled von Neumann neighborhood.at n=31A273685
• Numbers k such that 7*10^k + 39 is prime.at n=30A275067
• Table read by antidiagonals: Place k equally spaced points on each side of a regular n-gon and join every pair of these n*k points by a chord; T(n,k) (n >= 3, k >= 0) gives the number of edges in the resulting planar graph.at n=51A367305