Expansion of (1 - 2*x - sqrt(1-4*x))/(4*x^2 + sqrt(1-4*x)*(3*x+1) - 5*x + 1).

A242781

Expansion of (1 - 2*x - sqrt(1-4*x))/(4*x^2 + sqrt(1-4*x)*(3*x+1) - 5*x + 1).

Terms

    a(0) =0a(1) =0a(2) =1a(3) =4a(4) =15a(5) =57a(6) =217a(7) =828a(8) =3169a(9) =12165a(10) =46827a(11) =180701a(12) =698867a(13) =2708307a(14) =10514331a(15) =40885356a(16) =159216543a(17) =620845293a(18) =2423825649a(19) =9473195889a(20) =37061983617a(21) =145131715707a(22) =568808493081

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