49166

Appears in sequences

• 1/4 the number of (n+1) X 8 0..2 arrays with every 2 X 2 subblock having distinct clockwise edge differences.at n=29A209726
• Primitive deficient numbers n having a companion m > n such that sigma(n)/n = sigma(m)/m (ordered by increasing (smallest possible) m).at n=20A212611
• Number of partitions of 2n such that (sum of parts having multiplicity 1) = sum of all other parts.at n=33A240447
• a(n) is the smallest number k such that k = (sigma(n*(sigma(k)-k)) - n*(sigma(k)-k))/n.at n=49A321328