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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.

A088505 a(n) = (2^(3*n-1))/(integral_{x=0..1} (1-x^4)^n dx).

Table of values

n a(n)
1 5
2 45
3 390
4 3315
5 27846
6 232050
7 1922700
8 15862275
9 130423150
10 1069469830
11 8750207700
12 71460029550
13 582674087100
14 4744631852100
15 38589672397080
16 313541088226275
17 2545215892660350
18 20644528907133950
19 167329339563085700

List of values

[5, 45, 390, 3315, 27846, 232050, 1922700, 15862275, 130423150, 1069469830, 8750207700, 71460029550, 582674087100, 4744631852100, 38589672397080, 313541088226275, 2545215892660350, 20644528907133950, 167329339563085700]

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

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