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.

A173043 Triangle T(n, k, q) = binomial(n, k) - 1 + q^(n*binomial(n-2, k-1)) with T(n, 0, q) = T(n, n, q) = 1 and q = 2, read by rows.

Table of values

n a(n)
0 1
1 1
2 1
3 1
4 5
5 1
6 1
7 10
8 10
9 1
10 1
11 19
12 261
13 19
14 1
15 1
16 36
17 32777
18 32777
19 36
20 1
21 1
22 69
23 16777230
24 68719476755
25 16777230
26 69
27 1
28 1
29 134
30 34359738388
31 1180591620717411303458
32 1180591620717411303458
33 34359738388
34 134
35 1

List of values

[1, 1, 1, 1, 5, 1, 1, 10, 10, 1, 1, 19, 261, 19, 1, 1, 36, 32777, 32777, 36, 1, 1, 69, 16777230, 68719476755, 16777230, 69, 1, 1, 134, 34359738388, 1180591620717411303458, 1180591620717411303458, 34359738388, 134, 1]