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.

A309360 Numbers n such that the number of interior intersection points A091908(n) of the n-intersected triangle decreases when the subdivision of the triangle is refined from n-1 to n cutting line segments.

Table of values

n a(n)
1 19
2 23
3 29
4 39
5 41
6 47
7 59
8 65
9 69
10 71
11 79
12 83
13 87
14 89
15 95
16 103
17 109
18 111
19 119
20 125
21 129
22 131
23 139
24 143
25 149
26 151
27 153
28 155
29 159
30 167
31 169
32 179
33 181
34 191
35 197
36 199
37 203
38 207
39 209
40 215
41 219
42 223
43 227
44 229
45 233
46 237
47 239
48 251
49 259
50 263
51 265
52 269

List of values

[19, 23, 29, 39, 41, 47, 59, 65, 69, 71, 79, 83, 87, 89, 95, 103, 109, 111, 119, 125, 129, 131, 139, 143, 149, 151, 153, 155, 159, 167, 169, 179, 181, 191, 197, 199, 203, 207, 209, 215, 219, 223, 227, 229, 233, 237, 239, 251, 259, 263, 265, 269]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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