524284

Appears in sequences

• Number of free subsets of multiplicative group of GF(2^n).at n=19A007230
• a(n) = 2^n - 4.at n=17A028399
• Sum of terms in row n of A081532.at n=33A081533
• Divisors of perfect numbers (A000396), sorted.at n=45A096360
• Let S(n)=Sigma(n)/2. Numbers n such that S(S(n))=n, 1/2-Sociable number of order 1 or 2.at n=29A113791
• Number of pairs of probabilistically independent subsets in a set composed of n elements.at n=17A121312
• Residues of 3^(2^(p(n)-1)) for Mersenne numbers with prime indices.at n=7A131459
• Triangle read by rows: row n lists the divisors of n-th perfect number A000396(n) that are multiples of n-th Mersenne prime A000668(n).at n=32A139247
• Positions of zeros in A165477.at n=8A165478
• Row sums of triangle A166455.at n=18A166456
• Second diagonal under the main diagonal in A172119 written in a square (see comment).at n=17A173033
• Largest members of fully k-sociable cycles of order r.at n=26A183023
• T(n,k)=Number of (n+1)X(n+1) 0..k arrays with each 2X2 subblock off diagonal and antidiagonal nonsingular and the array of 2X2 subblock determinants antisymmetric about the diagonal and antidiagonal.at n=29A187705
• Number of 3X3 0..n arrays with each 2X2 subblock off diagonal and antidiagonal nonsingular and the array of 2X2 subblock determinants antisymmetric about the diagonal and antidiagonal.at n=6A187706
• Numbers k such that phi(k) - k = phi(k') - k', where k' is the arithmetic derivative of k and phi(k) is the Euler totient function.at n=22A239940
• A260685(4n).at n=18A264609
• Decimal representation of the n-th iteration of the "Rule 11" elementary cellular automaton starting with a single ON (black) cell.at n=9A266255
• Decimal representation of the n-th iteration of the "Rule 47" elementary cellular automaton starting with a single ON (black) cell.at n=9A266661
• Decimal representation of the x-axis, from the origin to the right edge, of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 619", based on the 5-celled von Neumann neighborhood.at n=18A283353
• Decimal representation of the x-axis, from the left edge to the origin, of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 705", based on the 5-celled von Neumann neighborhood.at n=18A283650