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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.

A291585 a(n) = ((2n-1)!!)^3 * Sum_{i=1..n} 1/(2*i-1)^3.

Table of values

n a(n)
0 0
1 1
2 28
3 3527
4 1213136
5 885533769
6 1179489355164
7 2592461355675183
8 8752024838912328000
9 43007026735417743104625
10 295026115290377469777013500
11 2732517516522603185416699320375
12 33249139841891876848539850177362000
13 519549434719363290227226596791835765625

List of values

[0, 1, 28, 3527, 1213136, 885533769, 1179489355164, 2592461355675183, 8752024838912328000, 43007026735417743104625, 295026115290377469777013500, 2732517516522603185416699320375, 33249139841891876848539850177362000, 519549434719363290227226596791835765625]

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

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