100946

Appears in sequences

• Number of nonempty subsets of {1,2,...,n} in which exactly 1/2 of the elements are <= (n-3)/3.at n=22A048027
• a(n) = binomial(n,6)-1.at n=17A124089
• Value of A063882 at start of n-th generation of terms.at n=16A132176
• Numbers k such that k and k^2 use only the digits 0, 1, 4, 6 and 9.at n=45A136862
• a(n) = 625n^2 - 364n + 53.at n=12A157621
• Numbers n such that both n and n squared contain exactly the same digits, and n is not divisible by 10.at n=30A258231
• Numbers k such that the equation x^2 - k*y^4 = -1 has a solution for which |y| > 2.at n=35A356488