286160

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=40A019292
• Base-3 digits are, in order, the first n terms of the periodic sequence with initial period 1,1,2.at n=11A037528
• Number of nX4 0..1 arrays with every element equal to 0, 1, 3 or 4 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.at n=13A300502