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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.

A369675 a(n) = Product_{k=0..n} (4^k + 4^(n-k)).

Table of values

n a(n)
0 2
1 25
2 2312
3 1690000
4 9773138432
5 454542400000000
6 167983232813812416512
7 499835663627223040000000000
8 11821129880009981801801971612516352
9 2251076882713432721110048178176000000000000
10 3407215210591493267547957182357614317126952945713152
11 41525058946342607360045945411073338768005424742400000000000000

List of values

[2, 25, 2312, 1690000, 9773138432, 454542400000000, 167983232813812416512, 499835663627223040000000000, 11821129880009981801801971612516352, 2251076882713432721110048178176000000000000, 3407215210591493267547957182357614317126952945713152, 41525058946342607360045945411073338768005424742400000000000000]

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

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