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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.

A153597 a(n) = ((6 + sqrt(3))^n - (6 - sqrt(3))^n)/(2*sqrt(3)).

Table of values

n a(n)
1 1
2 12
3 111
4 936
5 7569
6 59940
7 469503
8 3656016
9 28378593
10 219894588
11 1702241487
12 13170376440
13 101870548209
14 787824155988
15 6092161780959
16 47107744223904
17 364251591915201
18 2816463543593580
19 21777259989921327
20 168383822940467784

List of values

[1, 12, 111, 936, 7569, 59940, 469503, 3656016, 28378593, 219894588, 1702241487, 13170376440, 101870548209, 787824155988, 6092161780959, 47107744223904, 364251591915201, 2816463543593580, 21777259989921327, 168383822940467784]

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

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