240366

Appears in sequences

• Binomial transform of (1,0,1,0,1,0,1,0,2,0,2,0,2,....).at n=18A084638
• The number of permutations of {1,2,...,n,1,2,...,n} with the property that there are k or fewer numbers between the two k's in the set for k=1,...,n.at n=6A322180