26512

Appears in sequences

• Number of 5-tuples of different integers from [ 1,n ] with no common factors among triples.at n=25A015646
• Consider the family of directed multigraphs enriched by the species of parts. Sequence gives number of those multigraphs with n labeled arcs.at n=4A098631
• a(n) = denominator of the continued fraction which has the positive divisors of n as its terms. The terms are written in order from n for the integer part, to 1 for the final term of the continued fraction.at n=23A127613
• Triangle read by rows: Distinct classifications of N elements containing exactly R binary partitions.at n=60A171871
• Triangle read by columns: Distinct classifications of N elements containing exactly R binary partitions.at n=31A171872
• Number of n X 2 zero-sum -1..1 arrays with rows and columns lexicographically nondecreasing.at n=14A202027
• Expansion of Product_{k>=1} (1-x^k)^((-1)^k*k^2).at n=18A307460
• A linear divisibility sequence of order 8.at n=8A327542