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.

A052277 a(n) = (4n+2)!/2^(2n+1).

Table of values

n a(n)
0 1
1 90
2 113400
3 681080400
4 12504636144000
5 548828480360160000
6 49229914688306352000000
7 8094874872198213459360000000
8 2252447502438386084347676160000000
9 997586474354936812896742294502400000000
10 669959124447288464805194190141921792000000000

List of values

[1, 90, 113400, 681080400, 12504636144000, 548828480360160000, 49229914688306352000000, 8094874872198213459360000000, 2252447502438386084347676160000000, 997586474354936812896742294502400000000, 669959124447288464805194190141921792000000000]

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

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