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.

A281586 E.g.f.: z*(((exp(z)+1)/((exp(z)+2*exp(-z/2)*cos(z*sqrt(3)/2))/3))-1).

Table of values

n a(n)
0 0
1 1
2 2
3 3
4 -4
5 -15
6 -54
7 133
8 792
9 4293
10 -15130
11 -123849
12 -895212
13 4101799
14 42732522
15 386103915
16 -2177360656
17 -27544520691
18 -298649804706
19 1999963458217
20 29765143177020
21 376514568163377
22 -2919514870785766
23 -49968285360277437
24 -722370834074695896
25 6365117686550339275

List of values

[0, 1, 2, 3, -4, -15, -54, 133, 792, 4293, -15130, -123849, -895212, 4101799, 42732522, 386103915, -2177360656, -27544520691, -298649804706, 1999963458217, 29765143177020, 376514568163377, -2919514870785766, -49968285360277437, -722370834074695896, 6365117686550339275]