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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.

A069854 Denominators of coefficients of expansion of sinh(x)/sin(x) (even powers only).

Table of values

n a(n)
0 1
1 3
2 18
3 1890
4 22680
5 1247400
6 157172400
7 6129723600
8 81729648000
9 127932046704000
10 1646485441080480000
11 37869165144851040000
12 62372742591519360000
13 9304453876089900528000000
14 5075156659685400288000000
15 4459030689216262044805920000000

List of values

[1, 3, 18, 1890, 22680, 1247400, 157172400, 6129723600, 81729648000, 127932046704000, 1646485441080480000, 37869165144851040000, 62372742591519360000, 9304453876089900528000000, 5075156659685400288000000, 4459030689216262044805920000000]

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

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