52428

Appears in sequences

• a(n) = floor(2^n / n).at n=19A000799
• a(n) = ceiling(24(2^n-1)/n).at n=14A003177
• Number of points of L1 norm 3 in cubic lattice Z^n.at n=34A035597
• Coordination sequence for 34-dimensional cubic lattice.at n=3A035729
• Coordination sequence for lattice D*_34 (with edges defined by l_1 norm = 1).at n=3A035802
• Every run length in base 2 is 2.at n=7A043291
• Numbers whose base-4 representation contains exactly four 0's and four 3's.at n=14A045085
• Number of subsets of {1,2,..n} that sum to 1 mod n.at n=19A064355
• Solutions to phi(gpf(x)) - gpf(phi(x)) = 254 = c are special multiples of 257, x = 257k, where largest prime factors of factor k were observed from {2, 3, 5, 17}. See solutions to other even cases of c (=A070813): A007283 for 0, A070004 for 2, A070814 for 14, A070816 for 65534.at n=33A070815
• List of codewords in binary lexicode with Hamming distance 8 written as decimal numbers.at n=27A075940
• Expansion of 1/((1-x)*(1-2*x)*(1+x^2)).at n=15A077854
• Let u(1)=u(2)=1, u(3)=2n, u(k) = abs(u(k-1)-u(k-2)-u(k-3)) and M(k) = Max_{i<=i<=k} u(i), then for any k >= A078109(n), M(k) = floor(sqrt(k + a(n))).at n=30A078108
• Numbers k such that phi(k) is a perfect 7th power.at n=23A078167
• a(n) = A080315(n) - 2^A000523(A080315(n)), i.e., the terms of A080315 without their most significant bit.at n=9A080316
• a(n) = floor of (2^n-1)/n.at n=19A082482
• A014486-encoding of the Catalan mountain ranges with only even-length slopes allowed.at n=9A083932
• a(n) = 4 * floor(24*2^n/15) = 4*A077854(n).at n=13A102652
• a(n) is the number whose binary representation is the concatenation of n strings of the four digits "1100".at n=4A108020
• Number of closed walks of length n on the complete graph on 5 nodes from a given node.at n=9A109499
• G.f.: (4*x^2 + 2*x)/(4*x^3 - x^2 - 4*x + 1).at n=8A115243