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.

A142881 a(0) = 0, a(1) = 1, after which, if n=3k: a(n) = 2*a(n-1) - a(n-2), if n=3k+1: a(n) = a(n-1) + a(n-2), if n=3k+2: a(n) = 2*a(n-1) + a(n-2).

Table of values

n a(n)
0 0
1 1
2 2
3 3
4 5
5 13
6 21
7 34
8 89
9 144
10 233
11 610
12 987
13 1597
14 4181
15 6765
16 10946
17 28657
18 46368
19 75025
20 196418
21 317811
22 514229
23 1346269
24 2178309
25 3524578
26 9227465
27 14930352
28 24157817
29 63245986
30 102334155
31 165580141
32 433494437
33 701408733
34 1134903170

List of values

[0, 1, 2, 3, 5, 13, 21, 34, 89, 144, 233, 610, 987, 1597, 4181, 6765, 10946, 28657, 46368, 75025, 196418, 317811, 514229, 1346269, 2178309, 3524578, 9227465, 14930352, 24157817, 63245986, 102334155, 165580141, 433494437, 701408733, 1134903170]

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

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