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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.

A013721 a(n) = 16^(2*n + 1).

Table of values

n a(n)
0 16
1 4096
2 1048576
3 268435456
4 68719476736
5 17592186044416
6 4503599627370496
7 1152921504606846976
8 295147905179352825856
9 75557863725914323419136
10 19342813113834066795298816
11 4951760157141521099596496896

List of values

[16, 4096, 1048576, 268435456, 68719476736, 17592186044416, 4503599627370496, 1152921504606846976, 295147905179352825856, 75557863725914323419136, 19342813113834066795298816, 4951760157141521099596496896]

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

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