128802
domain: N
Appears in sequences
- Define sequence S(a_0,a_1) by a_{n+2} is least integer such that a_{n+2}/a_{n+1}>a_{n+1}/a_n for n >= 0. This is S(3,4).at n=20A018908
- Pisot sequence L(6,10).at n=18A048587
- Expansion of (2-x-x^2-x^3)/((1-x)*(1-x^2-x^3)).at n=45A052954
- a(n)=the sum of the (1,2)- and (1,3)-entries of the matrix P^n + T^n, where the 3 X 3 matrices P and T are defined by P=[0,1,0;0,0,1;1,0,0] and T=[0,1,0;0,0,1;1,1,0].at n=44A109524
- Number of strings of numbers x(i=1..7) in 0..n with sum i^4*x(i) equal to 2401*n.at n=24A184353
- Numbers k for which A064380(k) = k/2.at n=40A185078
- On a spirally numbered square grid, with labels starting at 1, this is the number of the last cell that a (1,n) leaper reaches before getting trapped, or -1 if it never gets trapped.at n=29A323471