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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.

A384453 a(n) is the n-th q-factorial number for q=-n.

Table of values

n a(n)
0 1
1 1
2 -1
3 -14
4 1989
5 4551456
6 -212333070125
7 -246183190158589200
8 8363069275661695069900425
9 9589835030046843645163231485460480
10 -420238291486760860506028808179511473194550689
11 -785971734280677729025139143429963192709390305509012000000

List of values

[1, 1, -1, -14, 1989, 4551456, -212333070125, -246183190158589200, 8363069275661695069900425, 9589835030046843645163231485460480, -420238291486760860506028808179511473194550689, -785971734280677729025139143429963192709390305509012000000]

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

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