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.

A117620 Start with x=4/3; repeatedly apply the map x -> (x^2) ceiling(x); sequence gives numerators of the resulting sequence of fractions.

Table of values

n a(n)
1 4
2 32
3 4096
4 285212672
5 3536203627938199896064
6 27735467127437590594631628902073909856749798039036448735232

List of values

[4, 32, 4096, 285212672, 3536203627938199896064, 27735467127437590594631628902073909856749798039036448735232]

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

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