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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.

A081918 a(0) = 1; a(n) = n^(n-1)(3n-1)/2 (n>0).

Table of values

n a(n)
0 1
1 1
2 5
3 36
4 352
5 4375
6 66096
7 1176490
8 24117248
9 559607373
10 14500000000
11 414998793616
12 13002646487040
13 442663617327139
14 16271152851709952
15 642244372558593750
16 27093655358260903936
17 1216529796891671712025

List of values

[1, 1, 5, 36, 352, 4375, 66096, 1176490, 24117248, 559607373, 14500000000, 414998793616, 13002646487040, 442663617327139, 16271152851709952, 642244372558593750, 27093655358260903936, 1216529796891671712025]

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

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