cp's OEIS Frontend

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.

A169619 Hankel transform of quartic (or 4-fold) factorial numbers A007696.

Table of values

n a(n)
0 1
1 4
2 640
3 11059200
4 39749419008000
5 48575443603606732800000
6 29918051262318914110928977920000000
7 12898757220773940360062849214160935321600000000000

List of values

[1, 4, 640, 11059200, 39749419008000, 48575443603606732800000, 29918051262318914110928977920000000, 12898757220773940360062849214160935321600000000000]

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

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