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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.

A099202 a(n) = 2^floor(n^2/2).

Table of values

n a(n)
0 1
1 1
2 4
3 16
4 256
5 4096
6 262144
7 16777216
8 4294967296
9 1099511627776
10 1125899906842624
11 1152921504606846976
12 4722366482869645213696
13 19342813113834066795298816
14 316912650057057350374175801344
15 5192296858534827628530496329220096
16 340282366920938463463374607431768211456

List of values

[1, 1, 4, 16, 256, 4096, 262144, 16777216, 4294967296, 1099511627776, 1125899906842624, 1152921504606846976, 4722366482869645213696, 19342813113834066795298816, 316912650057057350374175801344, 5192296858534827628530496329220096, 340282366920938463463374607431768211456]

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

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