45417

Appears in sequences

• Number of sum-free subsets of {1, ..., n}.at n=24A007865
• a(n) = floor(Pi^n * e^n).at n=5A062541
• Fourth binomial transform of A010686 (period 2: repeat 1,5).at n=6A080961
• a(n) = A273059(4n+1).at n=37A275917