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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.

A263417 a(n) = Product_{k=0..n} (3*k+2)^(n-k).

Table of values

n a(n)
0 1
1 2
2 20
3 1600
4 1408000
5 17346560000
6 3633063526400000
7 15218176499384320000000
8 1466155647574283911168000000000
9 3672576800382377947366110003200000000000
10 266783946802402043703868836144710942720000000000000

List of values

[1, 2, 20, 1600, 1408000, 17346560000, 3633063526400000, 15218176499384320000000, 1466155647574283911168000000000, 3672576800382377947366110003200000000000, 266783946802402043703868836144710942720000000000000]

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

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