80928

Appears in sequences

• Number of orbits of length n in map whose periodic points come from A006954.at n=41A060479
• Expansion of (1 - 4*x - (1-2*x)*sqrt(1-4*x-4*x^2))/(8*x^3).at n=9A071357
• Number of elements in the coprime subsets of the integers 1 to n.at n=27A087080
• A convolution triangle of numbers based on A071356.at n=46A110681
• Number of rectangles in a pyramid built with squares. The squares counted in A092498 are excluded.at n=25A134507
• Number of symmetric primitive Lucas strings of length n.at n=31A250112
• a(n) is the number of words of length n over an alphabet of size 4 that are in standard order and which have the property that every letter that appears in the word is repeated.at n=11A278989
• a(n) is the greatest integer k such that k/Fibonacci(n) < 2/3.at n=26A293545
• Lower (2/3)-midsequence of (F(2n)) and (F(2n+1)), where F=A000045 (Fibonacci numbers); see Comments.at n=12A387784