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.

A290701 a(n) = Sum_{k=1..n-1} binomial(n, k)*G_n*G_{n-k} where G_n is the n-th Genocchi number (of the first kind).

Table of values

n a(n)
2 2
3 -6
4 6
5 10
6 -30
7 -42
8 238
9 306
10 -2790
11 -3410
12 45606
13 53898
14 -993902
15 -1146810
16 27887070
17 31605346
18 -979901046
19 -1095183522
20 42166810390
21 46605422010
22 -2181617832702
23 -2389390959626
24 133636947954126
25 145257552124050
26 -9566483624198150
27 -10331802314134002

List of values

[2, -6, 6, 10, -30, -42, 238, 306, -2790, -3410, 45606, 53898, -993902, -1146810, 27887070, 31605346, -979901046, -1095183522, 42166810390, 46605422010, -2181617832702, -2389390959626, 133636947954126, 145257552124050, -9566483624198150, -10331802314134002]