328849

Properties

Appears in sequences

• Number of circular permutations of length n without 3-sequences.at n=7A165961
• Primes that remain prime when a single digit 9 is inserted between any two consecutive digits or as the leading or trailing digit.at n=41A215421
• Triangle read by rows: number of circular permutations of [1..n] with k progressions of rise 1, distance 1 and length 3 (n >= 3, k >= 0).at n=36A216718
• Prime numbersat n=28314