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.

A221719 a(n) = 3*2^n - Fibonacci(n+3) - 1.

Table of values

n a(n)
0 0
1 2
2 6
3 15
4 34
5 74
6 157
7 328
8 678
9 1391
10 2838
11 5766
12 11677
13 23588
14 47554
15 95719
16 192426
17 386450
18 775485
19 1555152
20 3117070
21 6245087
22 12507886
23 25044430
24 50135229
25 100345484
26 200812362
27 401821143
28 803960098
29 1608434426
30 3217700893
31 6436748056
32 12875674422
33 25754873423
34 51515449734
35 103040126934
36 206095184221
37 412214526260
38 824468140690

List of values

[0, 2, 6, 15, 34, 74, 157, 328, 678, 1391, 2838, 5766, 11677, 23588, 47554, 95719, 192426, 386450, 775485, 1555152, 3117070, 6245087, 12507886, 25044430, 50135229, 100345484, 200812362, 401821143, 803960098, 1608434426, 3217700893, 6436748056, 12875674422, 25754873423, 51515449734, 103040126934, 206095184221, 412214526260, 824468140690]

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

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