109174

Appears in sequences

• Row sums of the Riordan matrix (1+x/sqrt(1-4*x),(1-sqrt(1-4*x))/2) (A189175).at n=10A189176
• Indices of the start of 10 successive distinct digits in the decimal expansion of Pi.at n=37A258157
• Triangle read by rows: T(n,r) = binomial(n,r)*binomial(2*n-3*r-4,n-2*r-2)/(n-r-1), n >= 2, r = 0..floor(n/2)-1.at n=37A259097
• a(n) = [x^n] (3*x + 1)*(1 - sqrt(1 - 4*x))/(2*x).at n=11A352681