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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.

A081003 a(n) = Fibonacci(4n+1) + 1, or Fibonacci(2n+1)*Lucas(2n).

Table of values

n a(n)
0 2
1 6
2 35
3 234
4 1598
5 10947
6 75026
7 514230
8 3524579
9 24157818
10 165580142
11 1134903171
12 7778742050
13 53316291174
14 365435296163
15 2504730781962
16 17167680177566
17 117669030460995
18 806515533049394
19 5527939700884758
20 37889062373143907
21 259695496911122586

List of values

[2, 6, 35, 234, 1598, 10947, 75026, 514230, 3524579, 24157818, 165580142, 1134903171, 7778742050, 53316291174, 365435296163, 2504730781962, 17167680177566, 117669030460995, 806515533049394, 5527939700884758, 37889062373143907, 259695496911122586]

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

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