4177920

Appears in sequences

• a(n) = 4^(n-1)*(2^n-1).at n=8A016152
• Stirling2 triangle with scaled diagonals (powers of 4).at n=37A075499
• Number of subsets of {1,..,n} containing at least one prime.at n=21A089820
• Triangle T(k,n) by rows: n! * A075499(k,n).at n=37A099394
• a(n) = Sum_{d|n} Moebius(n/d)*d^(b-1)/phi(n) for b = 9.at n=7A160908
• Decimal representation of the diagonal from the origin to the corner of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 814", based on the 5-celled von Neumann neighborhood.at n=21A286866
• Decimal representation of the diagonal from the origin to the corner of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 422", based on the 5-celled von Neumann neighborhood.at n=21A288125
• Decimal representation of the diagonal from the origin to the corner of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 878", based on the 5-celled von Neumann neighborhood.at n=21A290659
• a(n) = 2^n - 2^floor(2n/3).at n=22A291779
• Number of binary carry-connected subsets of [n] containing n (for n > 0).at n=23A306299
• a(n) = Sum_{d|n} mu(n/d) * d^n / phi(n).at n=7A344210