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.

A047083 a(n) = Sum_{i=0..floor((n+1)/2)} A047080(n,i).

Table of values

n a(n)
0 1
1 2
2 2
3 5
4 7
5 15
6 23
7 49
8 76
9 161
10 253
11 532
12 845
13 1766
14 2829
15 5881
16 9488
17 19631
18 31863
19 65649
20 107112
21 219857
22 360360
23 737152
24 1213150
25 2473930
26 4086217
27 8309252
28 13769519
29 27927146
30 46416937
31 93915759
32 156520328
33 315982677
34 527937429
35 1063586803
36 1781131638

List of values

[1, 2, 2, 5, 7, 15, 23, 49, 76, 161, 253, 532, 845, 1766, 2829, 5881, 9488, 19631, 31863, 65649, 107112, 219857, 360360, 737152, 1213150, 2473930, 4086217, 8309252, 13769519, 27927146, 46416937, 93915759, 156520328, 315982677, 527937429, 1063586803, 1781131638]