Expansion of sqrt((1+4*x)/AGM(1+4*x,1-4*x)) where AGM denotes the arithmetic-geometric mean.

A228156

Expansion of sqrt((1+4*x)/AGM(1+4*x,1-4*x)) where AGM denotes the arithmetic-geometric mean.

Terms

    a(0) =1a(1) =2a(2) =0a(3) =8a(4) =2a(5) =68a(6) =32a(7) =720a(8) =464a(9) =8480a(10) =6656a(11) =106368a(12) =95912a(13) =1390928a(14) =1392512a(15) =18734144a(16) =20371650a(17) =257955716a(18) =300101760a(19) =3613109008a(20) =4448177412a(21) =51302395528a(22) =66289160512a(23) =736588435360a(24) =992578330048

External references