704643072

Appears in sequences

• Number of Hamiltonian cycles in the directed graph with 2n nodes {0..2n-1} and edges from each i to 2i (mod 2n) and to 2i+1 (mod 2n).at n=35A027362
• a(i) = the number of occurrences of 9's in the palindromic compositions of n=2*i-1 = the number of occurrences of 10's in the palindromic compositions of n=2*i.at n=24A079862
• Expansion of (1 - 2x + 2x^2 - x^3)/(1 - 2x)^2.at n=26A084860
• Number of permutations of length n containing exactly once 132 and 213, likewise for pattern pair (231,312).at n=24A089264
• (Product of first n even numbers)/(product of first k odd numbers) where k is chosen to give the least integer.at n=13A092978
• Smallest number beginning with 7 and having exactly n prime divisors counted with multiplicity.at n=26A106427
• a(n) = (n^3-n)*8^n.at n=6A128967
• Number of permutations of 3 indistinguishable copies of 1..n arranged in a circle with exactly 1 local maximum.at n=12A159721
• a(n) = 21*2^n.at n=25A175805
• a(n) is the least number with n prime factors (counted with multiplicity) that is the concatenation of two primes.at n=26A374669