99841

Appears in sequences

• Expansion of (1-x)^(-1)/(1+2*x-2*x^2).at n=12A077917
• Number of tilings of a 2 X n board with 1 X 1 and L-shaped tiles (where the L-shaped tiles cover 3 squares).at n=12A127864
• Nonnegative values x of solutions (x, y) to the Diophantine equation x^2+(x+839)^2 = y^2.at n=9A130647
• Number T(n,k) of isoscent sequences of length n with exactly k descents; triangle T(n,k), n>=0, 0<=k<=n+2-ceiling(2*sqrt(n+1)), read by rows.at n=34A242352
• Number of isoscent sequences of length n with exactly one descent.at n=8A243474