33562624

Appears in sequences

• Number of types of Boolean functions of n variables under a certain group.at n=12A028403
• Number of reversible strings with n beads of 4 colors.at n=13A032121
• Sum of coefficients of (x1)^(2i(1))*(x2)^(2i(2))*(x3)^(2i(3))*(x4)^(2i(4)) for {(i1),(i2),(i3),(i4)}=0,1,2,... : sum(i)=2n in the expansion of (x1+x2+x3+x4)^(2n) where n >= 1.at n=6A075878
• Number of n X n circulant singular matrices over GF(2).at n=25A086324
• Number of closed walks of length 2*n on the 4-cube.at n=7A092812
• Expansion of g.f.: x*(4-7*x+2*x^2-8*x^4+16*x^5-16*x^6)/((1-2*x) * (1-2*x^2) * (1-2*x+2*x^2) * (1+2*x^2)).at n=24A100213
• Expansion of (4 - 7*x + 2*x^2)/((1-2*x)*(1 - 2*x + 2*x^2)).at n=24A100215
• a(n) = 4*a(n-1) - 6*a(n-2) + 4*a(n-3) for n >= 4 starting with a(0) = 1, a(1) = 2, a(2) = 4, and a(3) = 6.at n=26A131885
• a(n) = n^7*(n^6 + 1)/2.at n=4A168663
• Number of length n+2 0..1 arrays with the sum of the maximum minus twice the median plus the minimum of adjacent triples multiplied by some arrangement of +-1 equal to zero.at n=23A251421
• Number of length n+2 0..1 arrays with the sum of medians of adjacent triples multiplied by some arrangement of +-1 equal to zero.at n=23A253122
• Array read by antidiagonals: A(n, L) is the number of closed walks of length 2L along the edges of an n-cube based at a vertex, for n >= 1 and L >= 1.at n=48A286899
• Dirichlet g.f.: Product_{k>=2} 1 / (1 - k^(-s))^(2^(k - 1)).at n=25A329800
• Dirichlet g.f.: Product_{k>=2} (1 + k^(-s))^(2^(k-1)).at n=25A344265
• Number of solutions of y^2 + y = x^3 + x where x and y are in GF(2^n).at n=24A362374
• Table read by downward antidiagonals: T(n,k) is the number of tilings of the n X k cylinder up to horizontal and vertical reflections by an asymmetric tile.at n=29A368257