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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.

A235692 Semiprimes which have one or more occurrences of exactly four different digits.

Table of values

n a(n)
1 1027
2 1037
3 1042
4 1043
5 1046
6 1047
7 1057
8 1059
9 1067
10 1073
11 1079
12 1082
13 1094
14 1203
15 1205
16 1207
17 1234
18 1238
19 1243
20 1247
21 1253
22 1257
23 1263
24 1267
25 1273
26 1285
27 1286
28 1293
29 1294
30 1306
31 1329
32 1345
33 1346
34 1347
35 1349
36 1354
37 1357
38 1369
39 1379
40 1382
41 1385
42 1387
43 1389

List of values

[1027, 1037, 1042, 1043, 1046, 1047, 1057, 1059, 1067, 1073, 1079, 1082, 1094, 1203, 1205, 1207, 1234, 1238, 1243, 1247, 1253, 1257, 1263, 1267, 1273, 1285, 1286, 1293, 1294, 1306, 1329, 1345, 1346, 1347, 1349, 1354, 1357, 1369, 1379, 1382, 1385, 1387, 1389]

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

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