34351349760
domain: N
Appears in sequences
- Numbers whose binary representation is the concatenation of n 1's and 2n-1 digits 0.at n=11A147538
- Sum of neighbor maps: number of nX5 binary arrays indicating the locations of corresponding elements equal to the sum mod 3 of their horizontal, vertical and antidiagonal neighbors in a random 0..2 nX5 array.at n=6A220176
- Expansion of 1/((1-4*x^2)^(3/2)-2*x*(1-4*x^2)).at n=23A270822
- a(n) = 2^n - 2^floor(2n/3).at n=35A291779