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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.

A225686 a(n) = Fibonacci(2*n^2), a "Somos-like" sequence.

Table of values

n a(n)
1 1
2 21
3 2584
4 2178309
5 12586269025
6 498454011879264
7 135301852344706746049
8 251728825683549488150424261
9 3210056809456107725247980776292056
10 280571172992510140037611932413038677189525

List of values

[1, 21, 2584, 2178309, 12586269025, 498454011879264, 135301852344706746049, 251728825683549488150424261, 3210056809456107725247980776292056, 280571172992510140037611932413038677189525]

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

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