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.

A346684 a(n) = Sum_{k=0..n} (-1)^(n-k) * binomial(8*k,k) / (7*k + 1).

Table of values

n a(n)
0 1
1 0
2 8
3 84
4 1156
5 17122
6 268262
7 4370086
8 73281938
9 1256608767
10 21933420953
11 388400019583
12 6960642974905
13 126008367913375
14 2300862338502425
15 42326714610861679
16 783717720798538121
17 14594469249932149279
18 273161824453612674593
19 5135931850101477641707

List of values

[1, 0, 8, 84, 1156, 17122, 268262, 4370086, 73281938, 1256608767, 21933420953, 388400019583, 6960642974905, 126008367913375, 2300862338502425, 42326714610861679, 783717720798538121, 14594469249932149279, 273161824453612674593, 5135931850101477641707]