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.

A129752 Triangular numbers t which are average of two consecutive primes p and p+4.

Table of values

n a(n)
1 15
2 21
3 45
4 105
5 231
6 351
7 465
8 741
9 861
10 1431
11 1485
12 3081
13 3321
14 4005
15 7875
16 10731
17 11175
18 11781
19 13695
20 14535
21 17205
22 17391
23 18915
24 21321
25 22155
26 23871
27 30135
28 33411
29 36585
30 39621
31 42195
32 51681
33 58311
34 80601
35 90525
36 92235
37 97461
38 108345

List of values

[15, 21, 45, 105, 231, 351, 465, 741, 861, 1431, 1485, 3081, 3321, 4005, 7875, 10731, 11175, 11781, 13695, 14535, 17205, 17391, 18915, 21321, 22155, 23871, 30135, 33411, 36585, 39621, 42195, 51681, 58311, 80601, 90525, 92235, 97461, 108345]

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

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