37186

Appears in sequences

• Number of monosubstituted alkanes C(n-1)H(2n-1)-X with n-1 carbon atoms that are stereoisomers.at n=13A000620
• Sum of the lengths of the cycle types of the permutation created by duality and reversal on the partitions of n.at n=39A036050
• a(n) = a(n-1) + a(n-2) - floor( a(n-1)/2 ).at n=40A173510
• Number of circular permutations of length n without consecutive triples i,i+2,i+4.at n=9A174074
• Triangle read by rows: number of circular permutations of [1..n] with k progressions of rise 1, distance 2 and length 3 (n >= 3, k >= 0).at n=16A216719
• Duplicate of A174074.at n=6A216720