Expansion of 1/(2*f(x)) - 1/(4 - 2*g(x)), where f(x) = sqrt(1 - 4*x) and g(x) = sqrt(1 + 4*x).

A268601

Expansion of 1/(2*f(x)) - 1/(4 - 2*g(x)), where f(x) = sqrt(1 - 4*x) and g(x) = sqrt(1 + 4*x).

Terms

    a(0) =0a(1) =0a(2) =2a(3) =8a(4) =34a(5) =120a(6) =468a(7) =1680a(8) =6530a(9) =23960a(10) =93532a(11) =348656a(12) =1366260a(13) =5149872a(14) =20238696a(15) =76907808a(16) =302903874a(17) =1158168792a(18) =4569270156a(19) =17555689008a(20) =69356428284a(21) =267518448912

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