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.

A074392 a(n) = Lucas(n+1) + (3*(-1)^n - 1)/2.

Table of values

n a(n)
0 2
1 1
2 5
3 5
4 12
5 16
6 30
7 45
8 77
9 121
10 200
11 320
12 522
13 841
14 1365
15 2205
16 3572
17 5776
18 9350
19 15125
20 24477
21 39601
22 64080
23 103680
24 167762
25 271441
26 439205
27 710645
28 1149852
29 1860496
30 3010350
31 4870845
32 7881197
33 12752041
34 20633240
35 33385280
36 54018522

List of values

[2, 1, 5, 5, 12, 16, 30, 45, 77, 121, 200, 320, 522, 841, 1365, 2205, 3572, 5776, 9350, 15125, 24477, 39601, 64080, 103680, 167762, 271441, 439205, 710645, 1149852, 1860496, 3010350, 4870845, 7881197, 12752041, 20633240, 33385280, 54018522]

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

Content is available under The OEIS End-User License Agreement.