98279

Appears in sequences

• Number of nonempty subsets of {1,2,...,n} in which exactly 1/2 of the elements are <= sqrt(n).at n=27A048093
• a(n) = binomial(n+6,5) - 1.at n=22A062988
• Numbers k such that p1=2k+3, p2=4k+5, p3=6k+7, p4=8k+9 and p5=10k+11 are all prime.at n=5A105654
• a(1) = 23, a(2) = 71, a(n) = 3*a(n-1) - 2*a(n-2) for n>2.at n=11A248877