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.

A176747 Triangular numbers and numbers which cannot be represented as a sum of two earlier members of the sequence.

Table of values

n a(n)
0 0
1 1
2 3
3 5
4 6
5 10
6 14
7 15
8 21
9 23
10 28
11 32
12 36
13 40
14 45
15 52
16 55
17 66
18 74
19 78
20 82
21 86
22 91
23 105
24 113
25 117
26 120
27 124
28 136
29 153
30 155
31 166
32 171
33 184
34 190
35 197
36 201
37 209
38 210
39 217
40 228
41 231
42 247
43 253
44 276
45 278
46 300
47 311
48 325
49 349
50 351
51 378
52 390
53 406
54 435
55 439
56 465
57 474
58 496
59 516
60 518

List of values

[0, 1, 3, 5, 6, 10, 14, 15, 21, 23, 28, 32, 36, 40, 45, 52, 55, 66, 74, 78, 82, 86, 91, 105, 113, 117, 120, 124, 136, 153, 155, 166, 171, 184, 190, 197, 201, 209, 210, 217, 228, 231, 247, 253, 276, 278, 300, 311, 325, 349, 351, 378, 390, 406, 435, 439, 465, 474, 496, 516, 518]

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

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