Expansion of Product_{n>=1} (1 - 4^(n-1)*x^n) * (1 + 4^(n-1)*x^n)^2.

A370434

Expansion of Product_{n>=1} (1 - 4^(n-1)*x^n) * (1 + 4^(n-1)*x^n)^2.

Terms

    a(0) =1a(1) =1a(2) =3a(3) =19a(4) =60a(5) =348a(6) =1216a(7) =6480a(8) =23040a(9) =121152a(10) =445696a(11) =2214912a(12) =8475648a(13) =40796160a(14) =158564352a(15) =754302976a(16) =2949120000a(17) =13694926848a(18) =55180001280a(19) =250151436288

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