Central coefficients of the Riordan matrix (g(x),x*g(x)), where g(x) = (1-x-x^2-sqrt(1-2*x-5*x^2+2*x^3+x^4))/(2*x^2) (A132276).

A190155

Central coefficients of the Riordan matrix (g(x),x*g(x)), where g(x) = (1-x-x^2-sqrt(1-2*x-5*x^2+2*x^3+x^4))/(2*x^2) (A132276).

Terms

    a(0) =1a(1) =2a(2) =12a(3) =64a(4) =385a(5) =2346a(6) =14672a(7) =92936a(8) =595179a(9) =3841970a(10) =24959726a(11) =162988464a(12) =1068860884a(13) =7034520304a(14) =46437268905a(15) =307351081056

External references