Kettenbrüche der Periodenlänge 4
#	D	P	Näherung	Kettenbruch	Form
2	0	0	2,00000	[2]	n2
7	-2	4	2,64575	[2;1,1,1,4]	n2 + n - 2
9	0	0	3,00000	[3]	n2
14	-2	4	3,74166	[3;1,2,1,6]	n2 + n - 2
16	0	0	4,00000	[4]	n2
23	-2	4	4,79583	[4;1,3,1,8]	n2 + n - 2
25	0	0	5,00000	[5]	n2
28	+3	4	5,29150	[5;3,2,3,10]	?
32	-4	4	5,65685	[5;1,1,1,10]	?
33	-3	4	5,74456	[5;1,2,1,10]	?
34	-2	4	5,83095	[5;1,4,1,10]	n2 + n - 2
36	0	0	6,00000	[6]	n2
47	-2	4	6,85565	[6;1,5,1,12]	n2 + n - 2
49	0	0	7,00000	[7]	n2
55	+6	4	7,41620	[7;2,2,2,14]	?
60	-4	4	7,74597	[7;1,2,1,14]	?
62	-2	4	7,87401	[7;1,6,1,14]	n2 + n - 2
64	0	0	8,00000	[8]	n2
75	-6	4	8,66025	[8;1,1,1,16]	?
78	-3	4	8,83176	[8;1,4,1,16]	?
79	-2	4	8,88819	[8;1,7,1,16]	n2 + n - 2
81	0	0	9,00000	[9]	n2
95	-5	4	9,74679	[9;1,2,1,18]	?
96	-4	4	9,79800	[9;1,3,1,18]	?
98	-2	4	9,89950	[9;1,8,1,18]	n2 + n - 2
100	0	0	10,00000	[10]	n2
119	-2	4	10,90871	[10;1,9,1,20]	n2 + n - 2
121	0	0	11,00000	[11]	n2
126	+5	4	11,22497	[11;4,2,4,22]	?
128	+7	4	11,31371	[11;3,5,3,22]	?
136	-8	4	11,22497	[11;1,1,1,22]	?
138	-6	4	11,74734	[11;1,2,1,22]	?
140	-4	4	11,83216	[11;1,4,1,22]	?
141	-3	4	11,87434	[11;1,6,1,22]	?
142	-2	4	11,91638	[11;1,10,1,22]	n2 + n - 2
144	0	0	12,00000	[12]	n2
155	+11	4	12,44990	[12;2,4,2,24]	?
167	-2	4	12,92285	[12;1,11,1,24]	n2 + n - 2
169	0	0	13,00000	[13]	n2
174	+5	4	13,19091	[13;5,4,5,26]	?
176	+7	4	13,26650	[13;3,1,3,26]	?
180	+11	4	13,41641	[13;2,2,2,26]	?
189	-7	4	13,74777	[13;1,2,1,26]	?
192	-4	4	13,85641	[13;1,5,1,26]	?
194	-2	4	13,92839	[13;1,12,1,26]	n2 + n - 2
196	0	0	14,00000	[14]	n2
215	-10	4	14,66288	[14;1,1,1,28]	?
219	-6	4	14,79865	[14;1,3,1,28]	?
220	-5	4	14,83240	[14;1,4,1,28]	?
222	-3	4	14,89966	[14;1,8,1,28]	?
223	-2	4	14,93318	[14;1,13,1,28]	n2 + n - 2
225	0	0	15,00000	[15]	n2
248	-8	4	15,74802	[15;1,2,1,30]	?
252	-6	4	15,87451	[15;1,6,1,30]	?
254	-2	4	15,93738	[15;1,14,1,30]	n2 + n - 2