A143848 Real part of x(n) defined as x(n+1)=x(n)^2+i with i=sqrt(-1),

1, 1, 0, -9, 80, 6111, 29951360, -207256402585089, -3919788933040280447085605363200, 14683863149476410414382246646213355893861151824423487368369151

Offset

1,4

Comments

A143849(n) = imaginary part of x(n).

Links

Table of n, a(n) for n=1..10.

Formula

a(n+1) = a(n)^2 - A143849(n)^2.

Example

x starts with 1, 1+i, 3*i, -9+i, 80-17*i, 6111-2719*i, ...

Crossrefs

A003095.

Sequence in context: A192214 A127265 A055070 * A317052 A363420 A352386

Adjacent sequences: A143845 A143846 A143847 * A143849 A143850 A143851

Keyword

sign

Author

Reinhard Zumkeller, Sep 03 2008

Status

approved