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.

A111009 Starting with the fraction 1/1, the prime numerators of fractions built according to the rule: add top and bottom to get the new bottom, add top and 4 times bottom to get the new top.

Table of values

n a(n)
1 5
2 13
3 41
4 1093
5 797161
6 21523361
7 926510094425921
8 1716841910146256242328924544641
9 3754733257489862401973357979128773
10 6957596529882152968992225251835887181478451547013

List of values

[5, 13, 41, 1093, 797161, 21523361, 926510094425921, 1716841910146256242328924544641, 3754733257489862401973357979128773, 6957596529882152968992225251835887181478451547013]

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

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