3441888

Appears in sequences

• f-triperfect numbers, where f(n) = sigma(n) and f-triperfect numbers are defined similarly to f-perfect numbers in A066218.at n=5A066731
• Numbers k such that sigma(k) divides Sum_{d|k} sigma(d).at n=12A221219
• Number of n X 5 0..1 arrays with every row least squares fitting to a positive-slope straight line and every column least squares fitting to a zero- or positive-slope straight line, with a single point array taken as having zero slope.at n=6A222966