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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.

A203479 a(n) = Product_{1 <= i < j <= n} (2^i + 2^j - 2).

Table of values

n a(n)
1 1
2 4
3 320
4 2027520
5 3855986196480
6 8359491805553413324800
7 79457890145647634305213865656320000
8 12897878211365028383150895090566532213003150950400000
9 140613650417826346093374124598539442743630963394643403845144815232614400000

List of values

[1, 4, 320, 2027520, 3855986196480, 8359491805553413324800, 79457890145647634305213865656320000, 12897878211365028383150895090566532213003150950400000, 140613650417826346093374124598539442743630963394643403845144815232614400000]

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

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