a(0) = 0, a(n) = [x^n] P(n-1,(1 + x)/(1 - x)) for n >= 1, where P(n,x) denotes the n-th Legendre polynomial.

A352654

a(0) = 0, a(n) = [x^n] P(n-1,(1 + x)/(1 - x)) for n >= 1, where P(n,x) denotes the n-th Legendre polynomial.

Terms

    a(0) =0a(1) =0a(2) =2a(3) =18a(4) =162a(5) =1500a(6) =14240a(7) =137886a(8) =1356194a(9) =13507416a(10) =135916002a(11) =1379301990a(12) =14097919968a(13) =144977296932

External references