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.

A337424 Sums s of positive exponents such that no prime of the form (3^j*5^k - 1)/2 with j + k = s exists.

Table of values

n a(n)
1 12
2 19
3 20
4 23
5 26
6 33
7 34
8 35
9 40
10 41
11 48
12 51
13 52
14 54
15 63
16 68
17 69
18 74
19 75
20 78
21 83
22 87
23 93
24 97
25 101
26 103
27 105
28 114
29 116
30 123
31 132
32 135
33 138
34 141
35 142
36 144
37 147
38 152
39 154
40 159
41 165
42 170
43 172
44 173
45 179
46 180
47 186
48 187
49 189
50 192
51 194
52 202
53 203
54 210
55 215
56 216
57 217
58 218
59 221

List of values

[12, 19, 20, 23, 26, 33, 34, 35, 40, 41, 48, 51, 52, 54, 63, 68, 69, 74, 75, 78, 83, 87, 93, 97, 101, 103, 105, 114, 116, 123, 132, 135, 138, 141, 142, 144, 147, 152, 154, 159, 165, 170, 172, 173, 179, 180, 186, 187, 189, 192, 194, 202, 203, 210, 215, 216, 217, 218, 221]

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

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