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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.

A099919 a(n) = F(3) + F(6) + F(9) + ... + F(3n), F(n) = Fibonacci numbers A000045.

Table of values

n a(n)
0 0
1 2
2 10
3 44
4 188
5 798
6 3382
7 14328
8 60696
9 257114
10 1089154
11 4613732
12 19544084
13 82790070
14 350704366
15 1485607536
16 6293134512
17 26658145586
18 112925716858
19 478361013020
20 2026369768940
21 8583840088782
22 36361730124070
23 154030760585064
24 652484772464328
25 2763969850442378

List of values

[0, 2, 10, 44, 188, 798, 3382, 14328, 60696, 257114, 1089154, 4613732, 19544084, 82790070, 350704366, 1485607536, 6293134512, 26658145586, 112925716858, 478361013020, 2026369768940, 8583840088782, 36361730124070, 154030760585064, 652484772464328, 2763969850442378]

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

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