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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.

A173948 a(n) = denominator of (Zeta(2, 1/4) - Zeta(2, n+1/4)), where Zeta is the Hurwitz Zeta function.

Table of values

n a(n)
0 1
1 1
2 25
3 2025
4 342225
5 98903025
6 4846248225
7 121156205625
8 101892368930625
9 12328976640605625
10 16878369020989100625
11 28372538324282678150625
12 28372538324282678150625
13 1390254377889851229380625
14 3905224547492592103330175625
15 1409786061644825749302193400625
16 5245813935380396613153461643725625

List of values

[1, 1, 25, 2025, 342225, 98903025, 4846248225, 121156205625, 101892368930625, 12328976640605625, 16878369020989100625, 28372538324282678150625, 28372538324282678150625, 1390254377889851229380625, 3905224547492592103330175625, 1409786061644825749302193400625, 5245813935380396613153461643725625]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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