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.

A347830 a(n) = Sum_{k=0..n} 2^k * A000009(k) * A000041(n-k).

Table of values

n a(n)
0 1
1 3
2 8
3 27
4 67
5 189
6 509
7 1329
8 3344
9 8694
10 22062
11 54756
12 136741
13 335103
14 822277
15 2016738
16 4872787
17 11711655
18 28253743
19 67319328
20 160333627
21 381350646
22 901272326
23 2121969771
24 4991176893
25 11689645776
26 27305992220
27 63705989106
28 148106539514
29 343371565449
30 795524336390

List of values

[1, 3, 8, 27, 67, 189, 509, 1329, 3344, 8694, 22062, 54756, 136741, 335103, 822277, 2016738, 4872787, 11711655, 28253743, 67319328, 160333627, 381350646, 901272326, 2121969771, 4991176893, 11689645776, 27305992220, 63705989106, 148106539514, 343371565449, 795524336390]

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

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