cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A174631 a(n) = Floor[(alpha^n-beta^n)(alpha-beta)], with alpha = (1 + Sqrt(a0))/2; beta = (1 - Sqrt(a0))/2; a0 = real minimal Pisot root of x^3-x-1=0(1.324717957244746).

Table of values

n a(n)
0 0
1 1
2 1
3 1
4 1
5 1
6 1
7 1
8 1
9 1
10 1
11 1
12 2
13 2
14 2
15 2
16 2
17 2
18 3
19 3
20 3
21 4
22 4
23 4
24 4
25 5
26 5
27 6
28 6
29 7
30 7
31 8
32 8
33 9
34 10
35 11
36 11
37 12
38 13
39 14
40 15
41 17
42 18
43 19
44 21
45 22
46 24
47 26
48 28
49 30
50 33
51 35
52 38
53 41
54 44
55 47
56 51
57 54
58 59
59 63
60 68
61 73
62 79
63 85
64 91
65 98
66 105
67 113
68 122
69 131
70 141
71 152
72 163
73 176
74 189
75 203
76 219
77 235
78 253
79 272
80 293
81 315
82 339
83 364
84 392
85 421
86 453
87 487
88 524
89 564
90 607
91 652
92 702
93 755
94 812
95 873
96 939
97 1010
98 1086
99 1168
100 1256

List of values

[0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 3, 3, 3, 4, 4, 4, 4, 5, 5, 6, 6, 7, 7, 8, 8, 9, 10, 11, 11, 12, 13, 14, 15, 17, 18, 19, 21, 22, 24, 26, 28, 30, 33, 35, 38, 41, 44, 47, 51, 54, 59, 63, 68, 73, 79, 85, 91, 98, 105, 113, 122, 131, 141, 152, 163, 176, 189, 203, 219, 235, 253, 272, 293, 315, 339, 364, 392, 421, 453, 487, 524, 564, 607, 652, 702, 755, 812, 873, 939, 1010, 1086, 1168, 1256]