84043

Appears in sequences

• Indices n of primes p(n), p(n+3) such that p(n)+1 and p(n+3)+1 have the same largest prime factor.at n=18A105406
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 805", based on the 5-celled von Neumann neighborhood.at n=41A273604
• Triangle read by rows: T(n,k) is the number of (unlabeled) connected graphs with n nodes such that k is the maximum number that can be reached when the stepping stone puzzle of A337663 is played on the graph, 1 <= k <= n.at n=49A350785