34433
domain: N
Appears in sequences
- Numbers k such that 69*2^k+1 is prime.at n=24A032384
- Numbers k such that the first 9 decimal digits of the k-th Fibonacci number is 1-9 pandigital.at n=20A112516
- Number of (3+1) X (n+1) 0..2 arrays with nondecreasing x(i,j)-x(i,j-1) in the i direction and nondecreasing x(i,j)+x(i-1,j) in the j direction.at n=18A250758
- a(n) = Sum_{k=1..n} 2^(n - floor(n/k)).at n=12A345108