162549

Appears in sequences

• Number of ordered 9-tuples of distinct pairwise coprime positive integers with largest element n.at n=30A186980
• The number of 1-length gaps in all possible covers of n-length line by 2-length segments.at n=37A228577
• a(n) = Sum_{k=0..n} (k+1) * binomial(k,2*(n-k)).at n=18A391962