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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.

A083316 a(n) = (2*6^n - (5^n - 3^n))/2.

Table of values

n a(n)
0 1
1 5
2 28
3 167
4 1024
5 6335
6 39208
7 241967
8 1487584
9 9110975
10 55612888
11 338471567
12 2054977744
13 12451139615
14 75314797768
15 454933369967
16 2744837485504
17 16545254288255
18 99652801745848
19 599823577977167
20 3608476467634864
21 21698537291452895
22 130429626637289128
23 783769805647653167

List of values

[1, 5, 28, 167, 1024, 6335, 39208, 241967, 1487584, 9110975, 55612888, 338471567, 2054977744, 12451139615, 75314797768, 454933369967, 2744837485504, 16545254288255, 99652801745848, 599823577977167, 3608476467634864, 21698537291452895, 130429626637289128, 783769805647653167]

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

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