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.

A127847 a(n)=4^C(n,2)*(4^n-1)/3.

Table of values

n a(n)
0 0
1 1
2 20
3 1344
4 348160
5 357564416
6 1465657589760
7 24017731997138944
8 1574098141758535761920
9 412645105639632468417970176
10 432690992231222540584116394393600
11 1814838857553600260569028862094736359424
12 30447948962887853884238295543591323273401466880

List of values

[0, 1, 20, 1344, 348160, 357564416, 1465657589760, 24017731997138944, 1574098141758535761920, 412645105639632468417970176, 432690992231222540584116394393600, 1814838857553600260569028862094736359424, 30447948962887853884238295543591323273401466880]

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

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