28685

Appears in sequences

• a(n) = b(n) + d(n), where b(n) = (n-th Fibonacci number > 1) and d(n) = (n-th non-Fibonacci number).at n=20A023483
• n-th non-Lucas number plus Fibonacci(n + 1).at n=21A023490
• Discriminants of real quadratic fields with class number 2 and related continued fraction period length of 11.at n=22A051976
• Row sums of triangle A134380.at n=8A134381
• Numbers k such that k and k^2 use only the digits 2, 5, 6, 8 and 9.at n=8A137114
• Wiener index of a benzenoid consisting of a chain of n hexagons characterized by the encoding s = 1133 (see the Gutman et al. reference, Sec. 5).at n=17A193399
• Decimal representation of the diagonal from the corner to the origin of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 454", based on the 5-celled von Neumann neighborhood.at n=45A288395