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.

A166897 a(n) = Sum_{k=0..[n/2]} C(n-k,k)^3*n/(n-k), n>=1.

Table of values

n a(n)
1 1
2 3
3 13
4 39
5 126
6 477
7 1765
8 6495
9 24709
10 95128
11 367368
12 1431453
13 5620343
14 22170543
15 87858813
16 349708431
17 1397003136
18 5598513261
19 22502171771
20 90681323364
21 366299212873
22 1482827487650
23 6014529069540
24 24439715146941

List of values

[1, 3, 13, 39, 126, 477, 1765, 6495, 24709, 95128, 367368, 1431453, 5620343, 22170543, 87858813, 349708431, 1397003136, 5598513261, 22502171771, 90681323364, 366299212873, 1482827487650, 6014529069540, 24439715146941]

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

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