169910

Appears in sequences

• Number of nonempty subsets of {1,2,...,n} in which exactly 1/2 of the elements are <= sqrt(n).at n=30A048093
• a(n) = binomial(n+6,5) - 1.at n=25A062988
• Number of (n+7)X9 0..1 matrices with each 8X8 subblock idempotent.at n=10A224591