1830271

Appears in sequences

• a(n) = (1/2)*(1 + Sum_{k=0..n} binomial(2*k, k)).at n=12A024718
• a(n) = Sum_{k=0..n} (-1)^(n-k)*binomial(k,floor(k/2)).at n=24A086905
• Antidiagonal sums of A096465.at n=24A124642