225060

Appears in sequences

• Number of different closest packings of equal spheres for rhombohedral crystals having repeat period n.at n=24A371992
• Lesser of a pair of amicable numbers k < m such that s(k) = m and s(m) = k, where s(k) = A380845(k) - k is the sum of aliquot divisors of k that have the same binary weight as k.at n=4A380849