7784628224

Appears in sequences

• a(n) = n*2^(n-1).at n=29A001787
• a(n) = 2^(2*n)*(2*n+1).at n=14A058962
• Start with the sequence [1, 1/2, 1/3, ..., 1/n]; form new sequence of n-1 terms by taking averages of successive terms; repeat until reach a single number F(n); a(n) = denominator of F(n).at n=28A090634
• Expansion of g.f. (1-4*x+5*x^2)/(1-2*x)^2.at n=30A097067
• Column 0 of triangle A118441, which is the matrix log of triangle A118435.at n=29A118442
• Row sums of triangle A128182.at n=27A128183
• Binomial transform of A004526.at n=30A139756
• a(n) is the smallest positive integer m with exactly n zeros in its binary representation and with n represented in binary as a substring of the binary representation of m.at n=28A147761
• Number of (possibly overlapping) occurrences of the subword given by the binary expansion of n in all binary words of length n.at n=34A228612
• Least number divisible by n whose number of divisors is also divisible by n.at n=28A272348
• Numbers of the form p*2^(p-1) where p is prime.at n=9A299795
• Expansion of Sum_{n>=1} ( (2 + x^n)^n - 2^n ).at n=28A318637
• a(n) = Sum_{d|n} 2^(d-1) * binomial(d, n/d).at n=28A338695