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.

A208260 Nonprime numbers starting and ending with digit 1.

Table of values

n a(n)
1 1
2 111
3 121
4 141
5 161
6 171
7 1001
8 1011
9 1041
10 1071
11 1081
12 1101
13 1111
14 1121
15 1131
16 1141
17 1161
18 1191
19 1211
20 1221
21 1241
22 1251
23 1261
24 1271
25 1281
26 1311
27 1331
28 1341
29 1351
30 1371
31 1391
32 1401
33 1411
34 1421
35 1431
36 1441
37 1461
38 1491
39 1501
40 1521
41 1541
42 1551
43 1561
44 1581
45 1591

List of values

[1, 111, 121, 141, 161, 171, 1001, 1011, 1041, 1071, 1081, 1101, 1111, 1121, 1131, 1141, 1161, 1191, 1211, 1221, 1241, 1251, 1261, 1271, 1281, 1311, 1331, 1341, 1351, 1371, 1391, 1401, 1411, 1421, 1431, 1441, 1461, 1491, 1501, 1521, 1541, 1551, 1561, 1581, 1591]

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

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