2709504

Appears in sequences

• Number of strongly triple-free subsets of {1, 2, ..., n}.at n=28A050295
• a(n) = Product_{i=0..n, j=0..n} (binomial(2*i, i) + binomial(2*j, j)).at n=2A324566
• Product of the digits of 3^n.at n=23A358271