2147483710
domain: N
Appears in sequences
- a(0)=0; for n>0, a(n) = Sum_{d|n} d*2^(n/d).at n=31A054598
- Sum_{d|n, d odd} d*2^(n/d).at n=31A054600
- Number of 2 X n 0-1 matrices avoiding simultaneously the right angled numbered polyomino patterns (ranpp) (00;1), (01;0), (10;0) and (01;1).at n=31A100314
- Number of (n+1) X (5+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=29A250739