113179
domain: N
Appears in sequences
- Number of n X n 0..1 arrays with every element equal to 1, 3, 5, 7 or 8 king-move adjacent elements, with upper left element zero.at n=12A298918
- Total number of divisors d of m (counted with multiplicity), such that the prime signature of d is a partition of two and m runs through the set of least numbers whose prime signature is a partition of n.at n=24A309691
- a(n) is the number of squarefree semiprimes <= 2^n.at n=19A358078