30255

Appears in sequences

• a(n) = least m such that if r and s in {F(h)/F(2*h): h = 1,2,...,n} satisfy r < s, then r < k/m < s for some integer k, where F = A000045 (Fibonacci numbers).at n=20A024831
• Expansion of g.f. 5*(1-x-x^2)/((1+x)*(1-3*x+x^2)).at n=10A189316
• Number of maximal subsets of {1..n} whose sum is less than or equal to the sum of their complement.at n=20A326173
• Numbers k such that the sums (with multiplicity) of prime factors of k and k+1 are both squares.at n=31A359445
• Length of the shorts leg in the unique primitive Pythagorean triple whose inradius is A000032(n) and such that its long leg and its hypotenuse are consecutive natural numbers.at n=20A380821