71542

Appears in sequences

• Triangle read by rows: number of meanders filling out an n X k grid.at n=32A200893
• Number of (n+2) X 6 binary arrays avoiding patterns 001 and 110 in rows, columns and nw-to-se diagonals.at n=14A202443
• Expansion of exp( Sum_{n>=1} sigma_2(2*n)*x^n/n ) in powers of x.at n=9A283224