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.

A343845 a(n) = Sum_{k=0..floor(n/2)} A109449(n-k, k).

Table of values

n a(n)
0 1
1 1
2 2
3 4
4 9
5 27
6 93
7 392
8 1898
9 10493
10 64885
11 443916
12 3326317
13 27085015
14 238073306
15 2246348560
16 22643042325
17 242808804441
18 2759740869777
19 33138397797908
20 419171443909394
21 5570771017483187
22 77603014042711369
23 1130712331125929112
24 17198408830271090233

List of values

[1, 1, 2, 4, 9, 27, 93, 392, 1898, 10493, 64885, 443916, 3326317, 27085015, 238073306, 2246348560, 22643042325, 242808804441, 2759740869777, 33138397797908, 419171443909394, 5570771017483187, 77603014042711369, 1130712331125929112, 17198408830271090233]

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

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