33546240

Appears in sequences

• Coefficients of x^n in Hermite polynomial H_{n+4}.at n=11A001816
• Generalized Euler phi function (for p=2).at n=25A003473
• Number of reversible strings with n beads of 4 colors. If more than 1 bead, not palindromic.at n=12A032087
• Number of 2n-bead balanced binary necklaces of fundamental period 2n which are equivalent to their reversed complement, but are not equivalent to their reverse and complement.at n=26A045687
• a(n) = 2^(n+2)*(2^(n+1)-1).at n=11A059153
• a(n) = Sum_{k=0..n} 2^max(k, n-k).at n=23A107659
• Number of rationals in [0, 1) having exactly n preperiodic bits, then exactly n periodic bits.at n=12A119920
• Infraperfect numbers: a(n) = 2^(2*p - 1) - 2^p, where p is A000043(n).at n=4A139096
• a(n) is the number of induced subgraphs with odd number of edges in the cycle graph C(n).at n=24A156232
• Number of equivalence classes of 3 X 3 matrices filled with n colors so that no two rotations are identical.at n=6A174686
• G.f.: (32*x^7/(1-2*x) + 16*x^5 + 24*x^6)/(1-2*x^2).at n=26A204696
• Number of bitstrings of length n (with at least two runs) where the last two runs have different lengths.at n=24A208901
• Sum of neighbor maps: number of nX5 binary arrays indicating the locations of corresponding elements equal to the sum mod 3 of their horizontal and antidiagonal neighbors in a random 0..2 nX5 array.at n=4A222384
• T(n,k)=Sum of neighbor maps: number of nXk binary arrays indicating the locations of corresponding elements equal to the sum mod 3 of their horizontal and antidiagonal neighbors in a random 0..2 nXk array.at n=40A222386
• Numbers k such that k^2 XOR (k+1)^2 is a square, and k^2 XOR (k-1)^2 is a square, where XOR is the bitwise logical XOR operator.at n=18A224242
• a(n) = 3^n*A_{n, 1/3}(-1) where A_{n, k}(x) are the generalized Eulerian polynomials.at n=12A225116
• The number of length n binary words with some prefix which contains two more 1's than 0's or two more 0's than 1's.at n=25A233411
• Number of similarity classes of vectors with minimal Ducci period n.at n=25A269795
• 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 54", based on the 5-celled von Neumann neighborhood.at n=25A285611
• 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 182", based on the 5-celled von Neumann neighborhood.at n=25A286410