290268

Appears in sequences

• Arises in enumerating non-degenerate colorings in Brook's Theorem.at n=21A152390
• Number of 3Xn arrays of the minimum value of corresponding elements and their horizontal, vertical or diagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..3 3Xn array.at n=8A220206