184319

Appears in sequences

• Least m which can be written as i*j+i+j in n different ways: A072670(m)=n.at n=38A072671
• Smallest initial value k that reaches 1 in n steps when iterating the map m -> rad(m)-1, where rad(m) is the squarefree kernel of m (A007947).at n=28A075426
• Triangle read by rows: T(n,m)=floor[(m/n)*row(n)].at n=31A152969
• Triangle read by rows: T(n,m)=floor[(m/n)*row(n)].at n=32A152969
• a(n) is the smallest number k representable as x*y+x+y, where x>=y>1, in exactly n ways, or -1 if no such k exists.at n=36A253975