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.

A184931 a(n) = n + [rn/u] + [sn/u] + [tn/u], where []=floor and r=sin(Pi/2), s=sin(Pi/3), t=sin(Pi/4), u=sin(Pi/5).

Table of values

n a(n)
1 4
2 9
3 15
4 19
5 26
6 31
7 36
8 41
9 47
10 53
11 58
12 63
13 69
14 73
15 80
16 85
17 90
18 95
19 100
20 107
21 111
22 117
23 122
24 127
25 133
26 139
27 143
28 149
29 154
30 161
31 165
32 171
33 176
34 181
35 187
36 193
37 197
38 202
39 208
40 214
41 219
42 224
43 230
44 234
45 241
46 246
47 251
48 256
49 262
50 268
51 273
52 278
53 284
54 288
55 295
56 300
57 304
58 310
59 315
60 322
61 326
62 332
63 337
64 342
65 348
66 354
67 358
68 364
69 370
70 376
71 380
72 386
73 391
74 397
75 402
76 407
77 413
78 417
79 424
80 429
81 434
82 439
83 445
84 450
85 456
86 461
87 467
88 471
89 478
90 483
91 488
92 493
93 499
94 504
95 509
96 515
97 520
98 525
99 531
100 537
101 541
102 547
103 552
104 558
105 563
106 569
107 574
108 579
109 585
110 591
111 595
112 601
113 606
114 611
115 617
116 622
117 628
118 632
119 639
120 644

List of values

[4, 9, 15, 19, 26, 31, 36, 41, 47, 53, 58, 63, 69, 73, 80, 85, 90, 95, 100, 107, 111, 117, 122, 127, 133, 139, 143, 149, 154, 161, 165, 171, 176, 181, 187, 193, 197, 202, 208, 214, 219, 224, 230, 234, 241, 246, 251, 256, 262, 268, 273, 278, 284, 288, 295, 300, 304, 310, 315, 322, 326, 332, 337, 342, 348, 354, 358, 364, 370, 376, 380, 386, 391, 397, 402, 407, 413, 417, 424, 429, 434, 439, 445, 450, 456, 461, 467, 471, 478, 483, 488, 493, 499, 504, 509, 515, 520, 525, 531, 537, 541, 547, 552, 558, 563, 569, 574, 579, 585, 591, 595, 601, 606, 611, 617, 622, 628, 632, 639, 644]