cp's OEIS Frontend

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.

A081004 a(n) = Fibonacci(4n+2) + 1, or Fibonacci(2n+2)*Lucas(2n).

Table of values

n a(n)
0 2
1 9
2 56
3 378
4 2585
5 17712
6 121394
7 832041
8 5702888
9 39088170
10 267914297
11 1836311904
12 12586269026
13 86267571273
14 591286729880
15 4052739537882
16 27777890035289
17 190392490709136
18 1304969544928658
19 8944394323791465
20 61305790721611592
21 420196140727489674

List of values

[2, 9, 56, 378, 2585, 17712, 121394, 832041, 5702888, 39088170, 267914297, 1836311904, 12586269026, 86267571273, 591286729880, 4052739537882, 27777890035289, 190392490709136, 1304969544928658, 8944394323791465, 61305790721611592, 420196140727489674]

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

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