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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.

A259144 Number of n-digit primes whose sum of digits is 7.

Table of values

n a(n)
1 1
2 2
3 7
4 20
5 28
6 58
7 95
8 154
9 226
10 278
11 403
12 570
13 734
14 949
15 1200
16 1515
17 1931
18 2328
19 2908
20 3529
21 4196
22 5034
23 5800
24 6870
25 7871
26 9132
27 10574
28 12359
29 14005
30 15871
31 17924
32 20231
33 22505
34 25903
35 28800
36 31532
37 34830
38 38479
39 43334
40 48847
41 52769
42 57173
43 61545
44 67774
45 75186

List of values

[1, 2, 7, 20, 28, 58, 95, 154, 226, 278, 403, 570, 734, 949, 1200, 1515, 1931, 2328, 2908, 3529, 4196, 5034, 5800, 6870, 7871, 9132, 10574, 12359, 14005, 15871, 17924, 20231, 22505, 25903, 28800, 31532, 34830, 38479, 43334, 48847, 52769, 57173, 61545, 67774, 75186]

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

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