6992960

Appears in sequences

• Let y=(1-sqrt(1-4*z))/(1+sqrt(1-4*z)) denote the g.f. for the Catalan numbers (A000108); sequence has g.f. sum(k>=1, y^(2^k)/(1+y^(2^(k+1))) ).at n=14A191606
• Number of length 5+1 0..n arrays with the sum of the squares of adjacent differences multiplied by some arrangement of +-1 equal to zero.at n=26A250280