316129

Appears in sequences

• Numbers k such that phi(sigma(phi(k))) = sigma(k).at n=22A066462
• Number of (2+1) X (n+1) 0..1 arrays x(i,j) with row sums sum{x(i,j), j=1..n+1} nondecreasing, and column sums sum{i^2*x(i,j), i=1..2+1} nondecreasing.at n=20A233302