103274625

Appears in sequences

• a(n) = Sum_{k=0..n-1} binomial(n,k+1) * binomial(n+k,k).at n=12A002002
• a(n) = T([n/2],[(n+1)/2]), where T = Delannoy triangle (A008288).at n=23A026003
• Expansion of (1 + x)^12 / (1 - x)^13.at n=11A053805
• a(n) = Hypergeometric([-n, n], [1], 2).at n=12A182626
• Expansion of (1 + x)^11 / (1 - x)^12.at n=12A240876