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.

A217303 Minimal natural number (in decimal representation) with n prime substrings in base-3 representation (substrings with leading zeros are considered to be nonprime).

Table of values

n a(n)
0 1
1 2
2 5
3 11
4 17
5 23
6 50
7 104
8 71
9 152
10 215
11 395
12 476
13 701
14 719
15 1367
16 1934
17 1448
18 4127
19 4121
20 4346
21 5822
22 12302
23 12383
24 17468
25 25505
26 32066
27 39113
28 51749
29 91040
30 111509
31 110798
32 117359
33 157211
34 332396
35 334358
36 465092
37 333791
38 819386
39 865232
40 1001375
41 1396673

List of values

[1, 2, 5, 11, 17, 23, 50, 104, 71, 152, 215, 395, 476, 701, 719, 1367, 1934, 1448, 4127, 4121, 4346, 5822, 12302, 12383, 17468, 25505, 32066, 39113, 51749, 91040, 111509, 110798, 117359, 157211, 332396, 334358, 465092, 333791, 819386, 865232, 1001375, 1396673]