6508702

Appears in sequences

• Number of ways to seat n people around a circular table such that person i is next to person i-1 or i+1 or both.at n=15A120766
• Number of nXnXn triangular nonnegative integer arrays, symmetric under 120 degree rotation, with all sums of an element and its neighbors <= 13.at n=7A166208
• Number of 7X7X7 triangular nonnegative integer arrays, symmetric under 120 degree rotation, with all sums of an element and its neighbors <= n.at n=13A166215