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.

A105720 Triangular matchstick numbers in the class of prime numbers: sum of n-th and next n primes.

Table of values

n a(n)
1 5
2 15
3 36
4 67
5 112
6 169
7 240
8 323
9 424
10 539
11 662
12 803
13 964
14 1133
15 1312
16 1523
17 1746
18 1987
19 2246
20 2519
21 2808
22 3119
23 3436
24 3787
25 4154
26 4529
27 4920
28 5337
29 5770
30 6219
31 6682
32 7173
33 7672
34 8203
35 8760
36 9323
37 9912
38 10517
39 11140
40 11783
41 12450
42 13135
43 13836

List of values

[5, 15, 36, 67, 112, 169, 240, 323, 424, 539, 662, 803, 964, 1133, 1312, 1523, 1746, 1987, 2246, 2519, 2808, 3119, 3436, 3787, 4154, 4529, 4920, 5337, 5770, 6219, 6682, 7173, 7672, 8203, 8760, 9323, 9912, 10517, 11140, 11783, 12450, 13135, 13836]

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

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