460885

Appears in sequences

• Number of permutations of [n] such that for each cycle c the smallest integer interval containing all elements of c has at most four elements.at n=14A276838
• a(n) = a(n-1) + a(n-2) - n*a(floor(n/2)), where a(0) = 1, a(1) = 1, a(2) = 1.at n=27A298400