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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.

A130506 a(1)=1; a(n) = Product_{r=0..2^(n-2)-1} (n^2 - prime(n-1) + r) if n > 1, where prime(i) is the i-th prime.

Table of values

n a(n)
1 1
2 2
3 42
4 24024
5 43609104000
6 1315041316842168115200000
7 3529525662153455013215570189186777498682088488960000000

List of values

[1, 2, 42, 24024, 43609104000, 1315041316842168115200000, 3529525662153455013215570189186777498682088488960000000]

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

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