321630

Appears in sequences

• Number of circular permutations of length n without modular consecutive triples i,i+2,i+4.at n=7A174075
• Triangle read by rows: number of circular permutations of [1..n] with k modular progressions of rise 1, distance 2 and length 3 (n >= 3, 0 <= k <= n).at n=49A216726
• Duplicate of A174075.at n=7A216727