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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.

A145451 a(n) = (1/2) * ((1 + sqrt(2))^(3^n) + (1 - sqrt(2))^(3^n)).

Table of values

n a(n)
0 1
1 7
2 1393
3 10812186007
4 5055923762956339922096065927393
5 516965476521645313412793919264355659075150020437514670946599534039092755401282583412315252007

List of values

[1, 7, 1393, 10812186007, 5055923762956339922096065927393, 516965476521645313412793919264355659075150020437514670946599534039092755401282583412315252007]

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

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