65930

Appears in sequences

• Numbers k such that binomial(2k,k)+1 is prime.at n=48A066699
• The number of regions inside a pentagram formed by the straight line segments mutually connecting all vertices and all points that divide the sides into n equal parts.at n=4A331906
• a(n) is the sum, over all overpartitions of n, of the non-overlined parts.at n=18A335651
• a(n) = Sum_{k=1..n} binomial(k+3,3) * floor(n/k).at n=31A366985