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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.

A120268 Numerator of Sum_{k=1..n} 1/(2*k-1)^2.

Table of values

n a(n)
1 1
2 10
3 259
4 12916
5 117469
6 14312974
7 2430898831
8 487983368
9 141433003757
10 51174593563322
11 51270597630767
12 27164483940418988
13 3400039831130408821
14 30634921277843705014
15 25789165074168004597399

List of values

[1, 10, 259, 12916, 117469, 14312974, 2430898831, 487983368, 141433003757, 51174593563322, 51270597630767, 27164483940418988, 3400039831130408821, 30634921277843705014, 25789165074168004597399]

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

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