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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.

A013768 a(n) = 21^(3*n + 1).

Table of values

n a(n)
0 21
1 194481
2 1801088541
3 16679880978201
4 154472377739119461
5 1430568690241985328321
6 13248496640331026125580781
7 122694327386105632949003612841
8 1136272165922724266740722458520501
9 10523016528610349434285830688358359761

List of values

[21, 194481, 1801088541, 16679880978201, 154472377739119461, 1430568690241985328321, 13248496640331026125580781, 122694327386105632949003612841, 1136272165922724266740722458520501, 10523016528610349434285830688358359761]

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

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