54045

Appears in sequences

• Number of permutations of length n which avoid the patterns 312, 1324, 3421; or avoid the patterns 312, 1324, 2341, etc.at n=34A116722
• Palindromes of the form 4n + 1 that are divisible by 5.at n=31A256704
• Number of length-n 0..4 arrays with no repeated value unequal to the previous repeated value plus one mod 4+1.at n=6A268940
• T(n,k)=Number of length-n 0..k arrays with no repeated value unequal to the previous repeated value plus one mod k+1.at n=51A268944
• Number of length-7 0..n arrays with no repeated value unequal to the previous repeated value plus one mod n+1.at n=3A268948
• 7*x - 1 Collatz-type sequence starting with a(0) = 11.at n=41A287330