Expansion of Gaussian product of arithmetic mean and Lehmer mean evaluated at 1 + 4*x.

Terms

a(0) =1a(1) =2a(2) =2a(3) =-4a(4) =10a(5) =-28a(6) =76a(7) =-184a(8) =378a(9) =-620a(10) =708a(11) =-328a(12) =-36a(13) =-4008a(14) =25960a(15) =-83984a(16) =135066a(17) =188788a(18) =-2232236a(19) =9070040a(20) =-23335660a(21) =29933128a(22) =69732568a(23) =-630906096a(24) =2551027132a(25) =-7193660232a(26) =13576199192a(27) =-5110303664a(28) =-92186317112