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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.

A194124 a(n) = Sum_{k=0..floor(n/2)} (C(n+2, k+2) - C(n+2, k)).

Table of values

n a(n)
0 0
1 2
2 5
3 14
4 28
5 62
6 117
7 242
8 451
9 912
10 1703
11 3418
12 6420
13 12854
14 24293
15 48602
16 92359
17 184736
18 352695
19 705410
20 1352055
21 2704132
22 5200275
23 10400574
24 20058273
25 40116572
26 77558731
27 155117490
28 300540164
29 601080358
30 1166803077
31 2333606186

List of values

[0, 2, 5, 14, 28, 62, 117, 242, 451, 912, 1703, 3418, 6420, 12854, 24293, 48602, 92359, 184736, 352695, 705410, 1352055, 2704132, 5200275, 10400574, 20058273, 40116572, 77558731, 155117490, 300540164, 601080358, 1166803077, 2333606186]

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

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