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Fibonacci Calculator

Generate sequences, find nth terms, and check Fibonacci numbers

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Fibonacci Calculator Hakkinda

Explore the Fibonacci sequence: generate the first N terms, find any specific term, check if a number belongs to the sequence, or sum a range. Shows the golden ratio approximation.

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In sequence mode, generates Fibonacci numbers iteratively (max 100 terms). The check mode uses the mathematical property that N is Fibonacci if and only if 5N²+4 or 5N²-4 is a perfect square. Shows φ (phi) approximation.

Adim Adim

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3 S
4 e
5 l
6 e
7 c
8 t
9
10 a
11
12 m
13 o
14 d
15 e
16 :
17
18 s
19 e
20 q
21 u
22 e
23 n
24 c
25 e
26 ,
27
28 n
29 t
30 h
31
32 t
33 e
34 r
35 m
36 ,
37
38 c
39 h
40 e
41 c
42 k
43 ,
44
45 o
46 r
47
48 s
49 u
50 m
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52 ,
53
54 '
55 E
56 n
57 t
58 e
59 r
60
61 a
62
63 n
64 u
65 m
66 b
67 e
68 r
69
70 (
71 N
72
73 f
74 o
75 r
76
77 s
78 e
79 q
80 u
81 e
82 n
83 c
84 e
85 /
86 t
87 e
88 r
89 m
90 ,
91
92 o
93 r
94
95 a
96
97 v
98 a
99 l
100 u
101 e
102
103 t
104 o
105
106 c
107 h
108 e
109 c
110 k
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112 '
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114
115 '
116 C
117 l
118 i
119 c
120 k
121
122 C
123 a
124 l
125 c
126 u
127 l
128 a
129 t
130 e
131
132 t
133 o
134
135 s
136 e
137 e
138
139 t
140 h
141 e
142
143 r
144 e
145 s
146 u
147 l
148 t
149 s
150
151 a
152 n
153 d
154
155 g
156 o
157 l
158 d
159 e
160 n
161
162 r
163 a
164 t
165 i
166 o
167 '
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