167710664

Appears in sequences

• a(4n+k) = (k+1)*binomial(5n+k,n)/(4n+k+1), k=0..3.at n=39A118968
• a(n) = binomial(5*n+3,n)/(n+1).at n=9A118971
• Number of achiral dissections of a polygon into n hexagons by nonintersecting diagonals rooted at a cell.at n=18A370061