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.

A023867 a(n) = 1*t(n) + 2*t(n-1) + ...+ k*t(n+1-k), where k=floor((n+1)/2) and t is A001950 (upper Wythoff sequence).

Table of values

n a(n)
1 2
2 5
3 17
4 24
5 54
6 71
7 127
8 153
9 242
10 279
11 409
12 465
13 645
14 717
15 954
16 1052
17 1354
18 1473
19 1848
20 1989
21 2444
22 2620
23 3164
24 3367
25 4007
26 4239
27 4983
28 5260
29 6116
30 6426
31 7402
32 7764
33 8868
34 9269
35 10509
36 10950
37 12333
38 12835
39 14370
40 14917
41 16611
42 17226
43 19087
44 19752
45 21788
46 22504

List of values

[2, 5, 17, 24, 54, 71, 127, 153, 242, 279, 409, 465, 645, 717, 954, 1052, 1354, 1473, 1848, 1989, 2444, 2620, 3164, 3367, 4007, 4239, 4983, 5260, 6116, 6426, 7402, 7764, 8868, 9269, 10509, 10950, 12333, 12835, 14370, 14917, 16611, 17226, 19087, 19752, 21788, 22504]