19329

Appears in sequences

• Start with 1 and repeatedly reverse the digits and add 38 to get the next term.at n=25A118634
• Number of composite k-Lehmer numbers up to 10^n.at n=7A234958
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 417", based on the 5-celled von Neumann neighborhood.at n=32A272018
• G.f. A(x) satisfies: A(x) = x * (1 + A(x) + A(x^2)^2 + A(x^3)^3 + ...).at n=48A332753
• a(n) is the number of regions formed by n-secting the angles of an octagon.at n=38A335769