208026

Appears in sequences

• Let sigma_m (n) be result of applying sum-of-divisors function m times to n; call n (m,k)-perfect if sigma_m (n) = k*n; sequence gives the (3,k)-perfect numbers.at n=39A019292
• Dirichlet convolution of sigma(n) with Catalan numbers.at n=12A034764
• Partial sums of A007587.at n=25A051799
• Number of n X 6 0..1 arrays avoiding 0 0 1 and 0 1 0 horizontally and 0 0 1 and 1 0 1 vertically.at n=7A207066