319716

Appears in sequences

• Number of two-sided n-step prudent walks ending at the northeast corner of their boxes, avoiding two consecutive west steps and south steps.at n=16A190794
• Number of (n+2)X(2+2) 0..3 arrays with every 3X3 subblock row and column sum 2 4 5 or 7 and every diagonal and antidiagonal sum not 2 4 5 or 7.at n=9A251917