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.

A228142 Number of blocks in a Steiner system S(2, 5, A228141(n+1)).

Table of values

n a(n)
1 1
2 21
3 30
4 82
5 99
6 183
7 208
8 324
9 357
10 505
11 546
12 726
13 775
14 987
15 1044
16 1288
17 1353
18 1629
19 1702
20 2010
21 2091
22 2431
23 2520
24 2892
25 2989
26 3393
27 3498
28 3934
29 4047
30 4515
31 4636
32 5136
33 5265
34 5797
35 5934
36 6498
37 6643
38 7239
39 7392
40 8020
41 8181
42 8841
43 9010
44 9702
45 9879
46 10603

List of values

[1, 21, 30, 82, 99, 183, 208, 324, 357, 505, 546, 726, 775, 987, 1044, 1288, 1353, 1629, 1702, 2010, 2091, 2431, 2520, 2892, 2989, 3393, 3498, 3934, 4047, 4515, 4636, 5136, 5265, 5797, 5934, 6498, 6643, 7239, 7392, 8020, 8181, 8841, 9010, 9702, 9879, 10603]