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.

A308251 Number of subsets of {1,...,n + 1} containing n + 1 and such that all positive differences of distinct elements are distinct.

Table of values

n a(n)
0 1
1 2
2 3
3 6
4 9
5 14
6 21
7 34
8 49
9 76
10 101
11 146
12 205
13 294
14 397
15 560
16 747
17 1028
18 1341
19 1810
20 2343
21 3178
22 4051
23 5370
24 6921
25 9014
26 11361
27 14838
28 18719
29 24082
30 29953
31 38220
32 47663
33 60550
34 74619
35 93848
36 115961
37 145320
38 177549
39 221676
40 270335
41 335124

List of values

[1, 2, 3, 6, 9, 14, 21, 34, 49, 76, 101, 146, 205, 294, 397, 560, 747, 1028, 1341, 1810, 2343, 3178, 4051, 5370, 6921, 9014, 11361, 14838, 18719, 24082, 29953, 38220, 47663, 60550, 74619, 93848, 115961, 145320, 177549, 221676, 270335, 335124]