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.

A026658 Sum{T(n-k,k)}, 0<=k<=[ n/2 ], T given by A026648.

Table of values

n a(n)
0 1
1 1
2 2
3 4
4 6
5 11
6 17
7 30
8 47
9 86
10 133
11 242
12 375
13 679
14 1054
15 1914
16 2968
17 5389
18 8357
19 15166
20 23523
21 42698
22 66221
23 120204
24 186425
25 338381
26 524806
27 952592
28 1477398
29 2681683
30 4159081
31 7549278
32 11708359
33 21252226
34 32960585
35 59827870

List of values

[1, 1, 2, 4, 6, 11, 17, 30, 47, 86, 133, 242, 375, 679, 1054, 1914, 2968, 5389, 8357, 15166, 23523, 42698, 66221, 120204, 186425, 338381, 524806, 952592, 1477398, 2681683, 4159081, 7549278, 11708359, 21252226, 32960585, 59827870]