31556

Appears in sequences

• Number of prime alternating tangles (or knots) of type Gamma_2 with two connected components.at n=10A067645
• Number of partitions of n with difference 3 between the number of odd parts and the number of even parts, both counted without multiplicity.at n=45A242694
• a(n) is the smallest number > 1 such that the concatenation a(1)a(2)...a(n) is a perfect power.at n=3A264733