1800000000
domain: N
Appears in sequences
- Product k^(2^(k-2)), k = 2..n.at n=4A006262
- The sum of the degree of each root node over all rooted labeled trees on n nodes.at n=10A206855
- Base-10 complementary numbers: n equals the product of the 10's complement of its digits.at n=32A294090
- Number of n-digit positive integers that are the product of two integers ending with 5.at n=10A337855