334084

Appears in sequences

• Expansion of g.f. (1 + 4*x)/(1 - 17*x^2).at n=9A096881
• a(n)=denominator of the probability that (x-y)/(x+y)+(y-z)/(y+z)+(z-u)/(z+u)+ (u-x)/(u+x) >0, assuming that each random quadruple of integers (x,y,z,u), with a<=x,y,z,u<=n, is equally likely.at n=33A106200
• Dihedral D3 elliptical invariant transform on A000045: a[n+1]/a[n]= Phi^4=((1+Sqrt[5])/2)^4.at n=8A115852
• a(n) = ceiling(n^4/4).at n=34A131478
• a(n) = floor(n^4/4).at n=34A131479
• a(n) = 4*n^4.at n=17A141046
• Number of (w,x,y,z) with all terms in {0,...,n}, w even and x odd.at n=33A212766
• Number of quadruples (w,x,y,z) with all terms in {0,...,n} such that w-x, x-y, and y-z all have the same parity.at n=33A212893
• Numbers that can be expressed as x+2y+z such that x, y, z, x+y, y+z, and x+2y+z are all positive squares.at n=28A307481
• Numbers k such that A071187(k) <> A329614(k).at n=23A329613
• Numerators of the sequence whose Dirichlet convolution with itself yields fourth powers (A000583).at n=33A383791