266657

Appears in sequences

• a(n) = [ (3rd elementary symmetric function of P(n))/(first elementary symmetric function of P(n)) ], where P(n) = {1, p(1), p(2), ..., p(n-1)}, where p(0) = 1.at n=26A024532
• Numbers k such that the k-th triangular number contains only digits {1,3,5}.at n=20A119114