268435486

Appears in sequences

• Dirichlet convolution of b_n=2^(n-1) with sigma(n).at n=28A034737
• a(n) = 1 + 2^(n-1) + n for n > 0, a(0) = 2.at n=29A052968
• Number of (n+1) X (4+1) 0..1 arrays with nondecreasing x(i,j)-x(i,j-1) in the i direction and nonincreasing x(i,j)-x(i-1,j) in the j direction.at n=26A250738