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.

A243963 a(n) = n*4^n*(-Z(1-n, 1/4)/2 + Z(1-n, 3/4)/2 - Z(1-n, 1)*(1 - 2^(-n))) for n > 0 and a(0) = 0, where Z(n, c) is the Hurwitz zeta function.

Table of values

n a(n)
0 0
1 0
2 2
3 3
4 -8
5 -25
6 96
7 427
8 -2176
9 -12465
10 79360
11 555731
12 -4245504
13 -35135945
14 313155584
15 2990414715
16 -30460116992
17 -329655706465
18 3777576173568
19 45692713833379
20 -581777702256640
21 -7777794952988025
22 108932957168730112
23 1595024111042171723
24 -24370173276164456448

List of values

[0, 0, 2, 3, -8, -25, 96, 427, -2176, -12465, 79360, 555731, -4245504, -35135945, 313155584, 2990414715, -30460116992, -329655706465, 3777576173568, 45692713833379, -581777702256640, -7777794952988025, 108932957168730112, 1595024111042171723, -24370173276164456448]