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.

A036256 a(n) = Sum_{i=0..n} binomial(i,floor(i/2)).

Table of values

n a(n)
0 1
1 2
2 4
3 7
4 13
5 23
6 43
7 78
8 148
9 274
10 526
11 988
12 1912
13 3628
14 7060
15 13495
16 26365
17 50675
18 99295
19 191673
20 376429
21 729145
22 1434577
23 2786655
24 5490811
25 10691111
26 21091711
27 41150011
28 81266611
29 158825371
30 313942891
31 614483086
32 1215563476

List of values

[1, 2, 4, 7, 13, 23, 43, 78, 148, 274, 526, 988, 1912, 3628, 7060, 13495, 26365, 50675, 99295, 191673, 376429, 729145, 1434577, 2786655, 5490811, 10691111, 21091711, 41150011, 81266611, 158825371, 313942891, 614483086, 1215563476]

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

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