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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.

A323775 a(n) = Sum_{k = 1...n} k^(2^(n - k)).

Table of values

n a(n)
1 1
2 3
3 8
4 30
5 359
6 72385
7 4338080222
8 18448597098193762732
9 340282370354622283774333836315916425069
10 115792089237316207213755562747271079374483128445080168204415615259394085515423

List of values

[1, 3, 8, 30, 359, 72385, 4338080222, 18448597098193762732, 340282370354622283774333836315916425069, 115792089237316207213755562747271079374483128445080168204415615259394085515423]

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

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